The basic specs for the Vx0 are:
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Processor Type
SpeedVIA C3
1GHzMemory
Flash RAM V30 64MB 128MB V50 128MB 256MB V90 512MB/1GB 256MB/512MB Video Chip
Max resolutionCN333
32-bit color: 16-bit/64K colors: up to 1280x1024@100H up to 1280x1024@85Hz up to 1600x1200@85Hz up to 1600x1200@60Hz up to 1920x1440@60Hz up to 1920x1440@60Hz 24-bit/16.7M colors: up to 1280x1024@100Hz Ports Network
USB
Serial
Parallel
PS/2
PCMCIA10/100
3 x USB2.0
2
1
2
1Power Supply
Plug
Off
Running12V 4A (label)
Coax: 5.5mm/2.1mm
7W
23-26WDimensions W x H x D 4.6cm x 20.1cm x 18cm
Note: I haven't removed the heat sinks to discover exactly what's hiding under them but Patrik Pascal - having a dead V30 - has. He's confirmed that the Northbridge is a CN333. Also he discovered that a previous owner had been curious about what was under the heatsinks and, in attempting to remove the one over the CPU, had ripped the CPU from the circuit board thanks to the strength of the bond of the double-sided thermal tape between the CPU and the heatsink.
For those to whom it matters here is some detail from Linux's /proc/cpuinfo
vendor_id : CentaurHauls cpu family : 6 model : 9 model name : VIA Nehemiah stepping : 8 flags : fpu vme de pse tsc msr cx8 mtrr pge cmov pat mmx fxsr sse rng rng_en ace ace_en
00:00.0 Host bridge: VIA Technologies, Inc. CN333/CN400/PM880 Host Bridge 00:00.1 Host bridge: VIA Technologies, Inc. CN333/CN400/PM880 Host Bridge 00:00.2 Host bridge: VIA Technologies, Inc. CN333/CN400/PM880 CPU Host Bridge 00:00.3 Host bridge: VIA Technologies, Inc. CN333/CN400/PM880 Host Bridge 00:00.4 Host bridge: VIA Technologies, Inc. CN333/CN400/PM880 Host Bridge 00:00.7 Host bridge: VIA Technologies, Inc. CN333/CN400/PM880 Host Bridge 00:01.0 PCI bridge: VIA Technologies, Inc. VT8237/VX700 PCI Bridge 00:0a.0 CardBus bridge: Ricoh Co Ltd RL5c476 II (rev 82) 00:0a.1 CardBus bridge: Ricoh Co Ltd RL5c476 II (rev 82) 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. VT82xxxxx UHCI USB 1.1 Controller (rev 81) 00:10.1 USB controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 Controller (rev 81) 00:10.2 USB controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 Controller (rev 81) 00:10.3 USB controller: VIA Technologies, Inc. VT82xxxxx 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 [Rhine-II] (rev 78) 01:00.0 VGA compatible controller: VIA Technologies, Inc. CN400/PM800/PM880/PN800/PN880 [S3 UniChrome Pro] (rev 02)
The unit uses a small external power unit rated at 12V @4A. It uses a standard 5.5mm/2.1mm coax plug.
Flash: This is easily replaceable. The V90 has a DOM in a standard 44-pin IDE connector. This is a vertical DOM plugged into a socket in the top right of the photograph.
RAM: The RAM is provided by a standard 200-pin DDR 333MHz SO-DIMM. The V90 datasheet says that other configurations up to 1GB are available so I guess the maximum RAM is 1GB.
USB: Whilst the V90 has three USB sockets there are actually two headers on the PCB in addition to the PCB mounted socket by the rear panel. The single USB port on the front panel is connected to one of these whilst the other has nothing connected to it - it's the yellow socket at the top left in the photograph. When running Linux a lsusb -t shows that Linux has found five USB ports. Plugging a standard motherboard plug-to-two-usb-sockets connector in to the spare header gave me two additional working USB sockets! So you do have the possibility of fitting some internal USB devices (see the Neoware CA15 page). Alternatively you could dump the PCMIA expansion card and fit two more USB sockets to the backpanel in its place.
PCMCIA: The PCMCIA slot is carried on a daughter board that is plugged into a couple of plugs rising from the motherboard - see the V90L picture to see these.
What with the two large heatsinks running down the middle, the power supply components and the expansion provision, there is no real space to fit an internal 2.5" drive.
Click on the photograph for a larger version.