HP t5135: Hardware 

• Hardware
• Firmware
• Linux

The HP t5135 I have was manufactured in February 2007. As far as the hardware is concerned the t5135 appears identical to the t5530 in every way except for the CPU that is fitted to the circuit board.

Specifications

Processor
Type    Speed	VIA Esther 400 MHz
Memory
Flash    RAM	64Mb (? max) 128Mb
Video
Chip    Max resolution	Via S3 1600 x 1200 32-bit colour
Ports
Network    USB    Serial    Parallel    PS/2	10/100 8 x USB2.0 1 1 KYBD & Mouse
Power
Input    Plug    Off    Running	12V 3.33A (from label) Coax: 5.5mm/2.1mm 6 W ~18W
Dimensions
W x H x D	53mm x 185mmm x 185mm

The embedded operating system is HP ThinConnect.

CPU

For those to whom it matters here is some detail from Linux's /proc/cpuinfo

vendor_id	:	CentaurHauls
cpu family	:	6
model	:	10
model name	:	Via Esther processor 400MHz
stepping	:	9
flags	:	fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge cmov pat clflush acpi mmx fxsr sse sse2 tm nx cpuid pni est tm2 rng rng_en ace ace_en ace2 ace2_en phe phe_en pmm pmm_en

PCI

00:00.0 Host bridge: VIA Technologies, Inc. CN700/VN800/P4M800CE/Pro Host Bridge
00:00.1 Host bridge: VIA Technologies, Inc. CN700/VN800/P4M800CE/Pro Host Bridge
00:00.2 Host bridge: VIA Technologies, Inc. CN700/VN800/P4M800CE/Pro Host Bridge
00:00.3 Host bridge: VIA Technologies, Inc. PT890 Host Bridge
00:00.4 Host bridge: VIA Technologies, Inc. CN700/VN800/P4M800CE/Pro Host Bridge
00:00.7 Host bridge: VIA Technologies, Inc. CN700/VN800/P4M800CE/Pro Host Bridge
00:01.0 PCI bridge: VIA Technologies, Inc. VT8237/VX700 PCI Bridge
00:0f.0 IDE interface: VIA Technologies, Inc. VT82C586A/B/VT82C686/A/B/VT823x/A/C PIPC Bus Master IDE (rev 06)
00:10.0 USB controller: VIA Technologies, Inc. VT82xx/62xx UHCI USB 1.1 Controller (rev 81)
00:10.1 USB controller: VIA Technologies, Inc. VT82xx/62xx UHCI USB 1.1 Controller (rev 81)
00:10.2 USB controller: VIA Technologies, Inc. VT82xx/62xx UHCI USB 1.1 Controller (rev 81)
00:10.3 USB controller: VIA Technologies, Inc. VT82xx/62xx UHCI USB 1.1 Controller (rev 81)
00:10.4 USB controller: VIA Technologies, Inc. USB 2.0 (rev 86)
00:11.0 ISA bridge: VIA Technologies, Inc. VT8237 ISA bridge [KT600/K8T800/K8T890 South]
00:11.5 Multimedia audio controller: VIA Technologies, Inc. VT8233/A/8235/8237 AC97 Audio Controller (rev 60)
00:12.0 Ethernet controller: VIA Technologies, Inc. VT6102/VT6103 [Rhine-II] (rev 78)
01:00.0 VGA compatible controller: VIA Technologies, Inc. CN700/P4M800 Pro/P4M800 CE/VN800 Graphics [S3 UniChrome Pro] (rev 01)

Power Supply

The unit requires a 12V supply with a 5.5mm/2.1mm coax plug. If yours came without one a unit can be easily sourced on ebay. In the past I've bought a 12V 3.3A unit on ebay that was advertised as being a replacement one for an LCD display.

Expansion

Click on the photo (right) for a larger version.

RAM: The RAM is soldered to the board and so fixed at 128MB. From an HP briefing document:

"Going forward, new t51xx and t55xx thin clients will not have configurable RAM. For manufacturing economies of scale, RAM will be installed "down." The t51xx and t55xx units will not include a SODIMM slot."

Flash: The Flash memory is a DOM (Disk On Module) fitted to a standard 44-pin IDE connector. This can be removed and Compact Flash cards or laptop hard drives can be connected in its place. My only observation here is that, using a conventional IDE plug, there is zero clearance between the plug and the internal metal case of the t5135. If you're not careful you may end up fitting the plug shifted over by one set of pins - as I did the first time!

usb: As well as 6 external sockets there are two USB ports located under the top cover. An ideal location for adding something like a USB wireless device.

Other: In a similar fashion to the t5540 and t5570 (et al) there is a 14-pin header (CN5) adjacent to the VT1211 super IO chip. The LPC interface lines from the VT1211 appear to be tracked to this. I don't know what (if any) expansion modules are available for this.