XW4600T  My Home Media server (on my Gigalan)           

Cheaper? Sure ! It's a Tank, (a boat anchor to some, sure, never me...) 
This PC has built in silent technology (smart fans) it is super super quiet!  Not only that, but the CPU heatsink/fan is super heavy duty, there will be no overheating there.(lint free)
$2300 new, now $99.   (about 2 bucks  a pound, yes, it's a heavy thick steel case) including for free W10-64.
The public brenchmarks are here.

The BOOT POST beep/blink  error codes, are in this short PDF.
The HP work-station (super quality) XW series 2007 up.  This is my MKV video file server (home). That allows all TV's in our home to watch streamed private movies.

I like HP  XW series of Desktops, (super quality)and still fully supported ! by HP 2017 as I type. ( I have one XW4600) This PC runs Windows 10 64bit too ! 

Get it with Intel CORE 2- Duo™ , or Quad, LGA775 socket processors. E series (E4500 up) or Q series Yorkfield. (2007) Mine? is Q9400
The PC above comes, (if secret reset pushed or coin pulled) and  defaults to   PXE  Ethernet boots (from a boot server) This must be turned off,  first thing. In BIOS or it can't boot to SATA.
It has RAID chips on board if you need that.

The advantage to a PC like this, is that it has all standardized ATX parts inside, so of something breaks, parts are 10x cheaper, and super easy to find.
Unlike any Laptop made and x10 worse notebooks.
Click the image below to see them.
 One guy on Ebay sells this 4600 for $99 refurbished and with W10-64b intalled and activated.  
Drawing 1:
Click me,  the 4600 is best bang for the buck and with QUAD processor ,wow !

The Processor upgraded to QUAD cored, Q9400 is $12. cost of a small potted plant. (mine came like this for free)

I will  document all  top secret? (1/2 joking) MOBO jacks , by pin names. ( most the books  connectors are world standards, but not the naked pins jacks)
 (Power switch wires , LED panel, USB aux wires, fan pins,etc  seen below.

First is how to get the front panel switches  working, well gee it just plugs in?  Then folks asking this lost there HP CASE and HP control  panel?
 (a push button switch SPST N.O, momentary to 8 and 6.) does the big work here. (this is a digital input, logic 0,  on pin 6 turns on the PSU.  logic 0 = 0volts = ground.
Do leave Chassis_xxx pins ALONE.  LED + means anode of LED. 
For sure never ground out pin 9, leave it alone .

The fan drawing below tells you it is not a thermal type fan, seen on other HP MOBO.(mother-boards) As does the full service manual.
Drawing #2 below  : front panel jack  and Photo 2: is fan jacks.    P5 JACK. J5/P5 jack.  Below.   See me jumper 6&8 here.
The even side is on the bottom edge, pin1 right, the missing pin is 14.
This PC uses PWM modulated fans, with a tachometer read back pin 3 (unlike other HP  that use a Thermistor sensor, to measure heat) Pin 3 and 4 are unique to HP's design.
The Tach output below is just  that it tells BIOS fan RPM live, the CMD pin is the Input to fan , called modulation PWM , as covered here.
Drawing 3: Fan jacks. CMD means PWM modulation from MOBO out and into FAN.  Tach is  2x speed, signal  to the Mobo and BIOS monitor,  10,000 rpm is 20,000 pulse per second.(square waves )
all  HP fans with 4 pins. MT means missing terminal.  see off set lock? in drawing at left?
I'm told that the CMD line is a dutycyle single PWM at a 20kHz rate (approx) I have not scoped it yet, but later may.

This is the Xw4600 MOBO,  "HP system motherboard" note the 7 slots for  expansion! and two,  x16 full speed slots !
The Glue chip Intel, UCH9 and  X38 +HSink, and SATA2 ports. + RAID.  (SATA3 began at ICH10) 5 internal SATA2 + 1 eternal e-SATA2 at rear.
This PC needs A GPU Card added, but  the MOBO has  Sound onboard + fast 1000 ethernet.
Uses standard PSU and standard DDR2 RAM, and all connectors you see there are standardize, but the naked gold pins seen below right side are not standardize. (world , USA or ISO)

HP and all other makers, of MOBO use there own rules on gold naked pin jacks. (as seen on the right side below)  and crib marked here.
P23 is also custom to HP.
I documented the front USB mobo pin matrix here.( for those that lost the Case or control panel?)

The main power jack is P1 is a ATX standard, no magic there
the Aux power is  called. P3 has  ATX2, 4 pin black/yellow pair of wires,  yellow is ATX spec for 12vdc. (HP used white for some odd reasons. my guess is the white wire HP has  higher current spec)

CHIPS SET: North and South bridge chips.
That X38 + ICH9  i82801-IR  , the only thing missing is USB3 (if needed a cheap add-in card, to an express slot x1.  ( I tested some old slow x16 VGA cards $5 each here and all worked)
 The newer intel ICH10 chip does USB3, but not this  ICH9. (but a new USB3 card will work here, for sure
Note the 7 PCI slots and  the X38 chip drives the x16's 2 x FASTER to the express version 2  speeds!!  < best older MOBO made  , IMO ! Each slot x16 is marked 75watts each! That means over 75w a video card needs and AUX POWER JACK ! and PSU to match that.
Photo #1:  (more here,   here , &  here  and here)

The mother board is silk screen white painted, and has marked J numbers Jacks (with matching P numbers (plug) Some  J numbers are fully covered in the service manaual.

As Seen in Appendix A and B in said manual here. (page 57 tells where each jack is and what it does
(and pin names) , clears as day)  see them above.

I need fast SSD drives, so.... I will exploit X38 to the max.
The Processor is below, left and the super super good chip, X38 , makes this the first ever, fastest express  slot mobo made. (HP lead the pack! back then...)  A LGA-775 processor socket.
The best processors are dual (real) and quad.  below is
Yorkfield CPU.
The fact is ,  my  x38 or x48 x58, here makes the express slot 16 go 2 times faster and is oldest and best setup for w10 64bit.   Buy a PC with 5 GT/s rated express lanes (1 or more) Or LGA1155 chips
Photo 2:                                                                                                                 Photo 3:

"But perhaps the most significant new feature is the introduction of X38 PCI Express 2.0, "a world first for any PC chipset.
 The headline feature for PCIE 2.0 is a doubling of the interconnect bit rate from 2.5GT/s to 5GT/s." (ref.1)
The X38 is hiding under these tall aluminum heat sink fins.
The X38 gives me full 2channel (lanes at least) express v2 slot x16 speeds, (1 for the came with video card, and my new SATA 6G card express x2)
Can do 1GB/S with 2 lanes,(max , but is tad less with overhead as all things have)
Photo 4:
nice pair ! In fact the best in year 2007, this tops the list of best PC for 2007, IMO

I exploited this to the max. (SSD upgrade 1)
If you
need faster preformance, from the boot drive,  try a SSD drive and then a new SATA3 card connected to RED arrow above.
Using the X16 slot, via X38 express v2, speeds  500MB/s v2 rates. max. (a true 2channel, express card)
The rules are best seen with this great wiki table. As you can see X1 +v2 is fast enough for SATA3 speeds. (SSD targeted) The stock chip ICH9 already does, AHCI mode.
Sata-II is 300MB/s Mark III  is 600.  So even X1 speeds are ok, for both, but and X3 card is only $20...  X1 on any SSD is plenty fast enough for most folks.
Drawing #4 (from WIKI) As you can see X2 is the best in most cases for SATA3 or USB3 upgrades. These are max slot speeds, ( means up to be never that fast, due to OVERHEAD laws.)
Thanks WIKI !

X1 on the left,
see the narrower, right finger pins?   then X2 on the right more pins?  X2 means 2 channel card , not the jack counts.
card on the right, exploits my X38 chips,  2 times faster bus. (I did  benchmark both) In fact any PC with version 2 level express bus.
My New card right does 377 MB/S, seq. read speeds, and slower card left 200. The 377 I'm sure is the speed limit on my cheap SSD. The write speeds is always limited, to the SSD spec.
In my opinion express v2 is needed, fulls speed, for the PC to have  good future.
X38, 48 and 58 chips sets and newer make the BEST PC's.  The x2 card on the right screams. (in my x16 slot) note the  2channels on slot edge right.
Many folks get confused over max bus  speeds and through-put.  (the former is raw electronic speeds of the transcievers ,the later includes, turn around time,  and software overhead)
The other factor for speed is the speed of your SSD,  that varies by maker and is always the big limit, running a 2 lane, express bus v2 chips., after all the 2 lanes can run up to, 1GB/s There is no SSD that can read write that fast.
Having the fastest SSD, is mostly not ever needed (or felt but gaming load times maybe),  moving from HDD to SSD , vast difference.  (even on older PC)
Photo #4                                                                                                                                           Photo #5

The X1 card on the left is like $10  but the X2 card is 3 times more $
There are some cheap, old Raid sas/sata cards that do X2 bus speeds but most do not work under Windows 10.(no drivers)

The connectors on both cards above may be frail, I'd use hot glue on all things I find  like this. All my cards were GOOD.
Better cards the jacks have solder down brace tabs, ending this frail issue. As  seen red  ticks  marks here , Photo #6.

Modifications and software loaded.
  • It is loaded with Windows 10-64, loaded, by maker, I removed all app/progs loaded, and then added , O&O shutup10 activated. (no MS: live ,no store, no cloud, NO SPY) (size  is 20GB for windows 10)
  • A New SSD 60GB (retired the old hot running HDD)
  • New SATA3 card above, for max speed, but SSD runs with out, this new card just fine.
  • New 1TB HDD for movies , and runs MKV videos and on my home network all SMART  TV's and DVD/BD players see my server and play error free.
  • Loaded, Serviio , and set it up in 10 minutes and works great. (paid my license fee $25 clams, yes, love it.) Serviio sets up ALL shares ,
  • Do not turn on windows shares of any kind  (by you directly)
  • Do not turn on W10, DLNA , by hand ever. let Serviio handle all that only.(or bad happens)
  • Do not let Windows turn SHARE on,  the c:\users\Public  folders,  or your TV will see this and get CONFUSED, turn off this default bad actions of windows.. (use properties in the the folder, and share and force it off)
  • I have on VLC video player French application loaded.  (safe if retrieved  from makers,site , otherwise NOT) loaded, and the German , SSD bench mark program.(AS_SSD)
  • And have ANYDESK running, to let me run this server as  headless server , super easy. ( most easy setup of any Remote desktop software , local only for me)
Options?, run NAS (OS options?) free !

I have a new 1TB drive inside and SSD now.(boot is SSD only)  the photo below is the inside hatch cover sticker.
Photo #7

Last and not least the defaults for BIOS are not for home usage at all,  see my BIOS bit fipping here , below.
Hints:  If you can't get the BIOS screens working,  then forget Windows, of any kind or what ever is there (Linux or O/S2), forget that, that is last, BIOS IS FIRST. (always) Fix dead BIOS FIRST !
The mobo has this tiny yellow reset button and a coin cell , if your cell battery dies or is removed or the reset pushed seen here, or you hit the BIOS factory reset line in BIOS. "file tab default setup"
Set the time and date now, if not WINDOW WILL be MAD AS  RABID DOG, (hopeless this is , fix this NOW)
The LED on the mobo glowing tells you standby power is ok, if not the power button will be dead as a door nail and if dead , means PSU is bad or PSU found shorts on the power rails, powering up.
The PC will NOT BOOT to SATA now. (by design, this is a Business PC set up for THIN-NET boots) setup for PC with NO HDD.
The fixes (bit flips) are here.
Power on, button,  hammer F10, F10 means go to BIOS, click English. Bingo BIOS is LIVE, no HDD/SDD or DVD drive need be present.
PXE OFF , find all PXE things here, and kill them all.
In HP parlance SETUP means BIOS.  (the word setup is a horribly vague name and over used, IMO) its BIOS and on a new PC  it is now UEFI.  Photo #8
PXE off.

BOOT order to SATA, not RAID  , not PXE, The this boot order if 1 fails, the BIOS then goes to the next in the list, in the order you put here. If I want to boot to USB, I must change order or remove the SSD here.
Photo #9
I have CD turned off (just not auto booted)

If using fast SSD turn on AHCI here .  (RAID and IDE are others) Photo #10

Smart cover lock, mine does not have it nor does it show up in BIOS ! But others do have this and want to defeat it for home use.
TAB:Security>Smart Cover>Cover Lock>Lock.
or: Security>Smart Cover>Cover Lock>Unlock.
If you have this feature and the device is missing or dead, go to above tabs in BIOS and turn it off.
If day1 built with lock options, and wires on ID #5 (solenoid) and jack #10 are missing you will get errors. ID 10 is the case intrusion switch alarm, lock. Try to turn it off in BIOS. (under Security tab)
Photo #11 (or drawing)
I took the ID names and added the P jack names.

The USB front mobo jack is in the manual, page 160+ ,   JACKS AND PLUG and Cables below , internal..
Others complain in forums at HP about these oddities:
They Lost the front panel controls or USB /audio panel; did you?
Lost the whole HP CASE and all is lost but the  MOBO:? okay, 
Most of those cables are all industry stanards, SATA, ATX2 power, PCI; PCI-express, CPU slot. and all jacks on the rear panel. are all standards.
But not the bottom row of nake gold jacks nor, P23, to that I answer.
Learn first that HP never sold MOBO as  RETAIL part, ever. (like ASUS does so well) no,, HP sold you only a working system, a  full blown PC.
The secret is here :
The answer is that HP has keyed connectors, that just plug in, no issues and the all those devices, (gold naked pin jacks)
Some  jacks like that are not in the manual, but are here below.
There is no need to document the other end of  any USB cable, its at WIKI, Google Wiki "USB pinout"
The manual words are clear , "do not plug it in wrong.! "
Drawing #5 USB Jack.  See that 5vdc , do not allow it to land on things that can blow up  , that is  what their warning means.
this is the gold mobo pin matrix jacks (100% non standard custom HP design here) P25 here.

Drawing #6" Below is Front USB.    P24 adds sense "detect" pin 10, unlike  P25
The jack marked front USB does has pin10 sensed but is not so on P25.
Lacking a cable here, one gets POST errors. (917/918) but if you want you can add a jumper to hide the error, below.
Tested and works to end POST error, I jumped 10 to 7 and no errors, here, only 512 remains.
There is not any,  F1 error defeat feature in our BIOS, to hide these errors. (like the higher XW models have.
The 1 jump  below gets rid of front jack error 917 and 918 jumping pin 1 to 10,  above drawings gets ride of the other error.
Drawing #5  (silk screen marked front AUDIO)
Some PC's  if P23 is wired wrong the Rear Audio jacks fail. (I have not tested this yet , only  tested the jumper below)
tested jumper and works to end POST errors.  pin 1 to 10 jumped

That is it for undocumented mobo pins.

The LAST IS BIOS POST ERROR CODE #512: (only 4 pin fans work with spec, CMD/Tacho rules.) When the  owner has things missing in his PC, only. (fans missing)
The fan POST code error #512 (rear fan) can not be defeated, for due cause, HP does not want you to let the X38  chip heat sink (and chip) overheat and die, so they don't let you do that. (EASY)
If you hold your hand on that heat sink, it is patently obvious this fact, yes, it does get very hot. X38 , lacking good air flows.
The PWM controls are complex in this PC, the PC modulates the fan and then reads back RPM.  (It may also error out if the Commands (CMD)  are ignored , in many possible ways)
Not only that, the fan is part of the complex "Quite fan technology" software, in the BIOS.  How to fool that algorithm,  is  not known. (Deep searches show none)
My  guess, if motivated to do so, not me,  is to run a full speed 2 wire fan and lie to the TACHO pin. But who wants a system with screaming load fans.?
Per this linked Intel or HP page.

Using a correct fan makes lots of sense no?  (I will)
I love this motherboard, it can be had for $15 and $20 with CPU. Lots of bang there for the buck. (less than the price of  potted plant. wow) Runs W10-64bit like a champ too. !
If you have the last PC in the Xw-nnnn series, it has  a JP30 jumper that disables code 512. ( I have no such jumper on my  4600)

Last, my spare MOBO tested as a minimum system a NAKED PC we call this... , sans CASE ! and all HP cables missing, causing all errors see above (POST errors)
  1. one mobo.
  2. one PSU (modern, ATX2 with correct 4 and 16 aux power cables 12vdc.)
  3. any usb keyboard and mouse.
  4. one stick of DDR ram seen front socket below. 2GB here.(spec ram)
  5. one video card, any express card below 75watts (or less) works. even the cheapest card on earth. works.!
  6. I have USB boot  flash memory stick (hidden at rear) with Windows, 7 , PE LIVE, running, (no hdd, no dvd drives present.)
  7. I get errors from POST: #918,917 and 512, No front USB, No front Audio and No rear fan, errors, but none of this prevents booting at all.  (I get 601 floppy error before disabling it in BIOS. and the PXE error show above)
  8. Windows LIVE PE booted.

Photo #12

WIN PE live booted above, no HDD here no DVD, and internet working. (gigalan cable there)

Fun with linux,  this PC MOBO has this cool, internal hidden USB jack. (bottom center edge of MOBO)
I have a USB boot stick with Lubuntu on it and it resides forever in the mobo, botton lower internal hidden USB jack,  I can boot to linux at any time and run HDD tests. (for example)
I just inserted, a USB Memory stick there, with Lubuntu 17.04,  built with RUFUS, app, (free) It will stay there forever, for doing tests or recovering data.
When I boot the PC, I can hit F9 (boot on fly choices) and pick this over the SSD boot, and then can run Smart tests on my SATA drives. (sure, USB boot in BIOS most be enabled)
I boot that now hidden STICK and  pick run Linux LIVE click "TRY LUBUNTU", then see the Linux desktop and then....
I want SMART INFO, I do.:
  • Pick the top left funny looking key ICON, and type DISK in the search box.(there)
  • I click DISKs (with wrench icon) , in the results. (was called Gnome Disc Utility, in past versions of Lubuntu..)
  • DISKS app runs, as see below...
  • Select  your disk drive SATA on the left, then...
  • On the right are the the silly 3 dashes ? to replace far better gear, old icon.  (silly this icon is... You can be eye balls week here,! no hands shaking)
  • Click the silly icon dashes, and pick inside that Pop-up, SMART bla bla.
  • Smart runs.
  • Check for sector errors. for sure watch for no spare clusters available now, (end of life) and unRecoverable bad sectors ( if yes, a fast dying drive it is , this drive is NO GOOD) (try to backup data using Linux?)

IMO , Lubuntu Rules ! No exploits in the wild either.

Trivia on X38 North Bridge CHIP:
The x38 chip can run  DDR3 RAM sticks, but the sockets are keyed for DDR2, preventing such actions. (  and some BIOS restrictions)

version 2.  10-15-2017   by DeadPool...