Universal Scientific Ind. (USI) Pro-261
Chipset
Socket 
FSB speeds 60MHz66MHz
Form factorATX (max 305 x 244 mm)
DimensionsEmpty
Cache
256KB512KB
Max RAM size
256MB
RAM types 72-pin FPM72-pin EDO
PSU connector
I/O ports1x
Floppy interface
1x
Gameport
2x
IDE interface
1x
IrDA
1x
PS/2 keyboard
1x
PS/2 mouse
1x
Parallel
2x
Serial
2x
USB 1.x
Expansion slots3x
16-bit ISA
4x
32-bit PCI
Notes
-
Requires optional VRM for dual-voltage CPUs (e.g. P55C/Pentium MMX)
-
Super I/O chip can be either National Semiconductor NS87336 or NS87338
-
Onboard audio is optional and is not present on all motherboards
Last updated 2026-02-11T12:43:51Z
Board info score is 6.6/10
Chips
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-> Super I/O
CPU family support
No BIOS files available
6 drivers available
Name
Version
Arch
OS support
Size
Filename
Name
Version
3.00
Arch
x86
OS support
OS/2 Warp 3.x
Windows NT 3.5x
Windows NT 4.0
Size
1.167MB
Filename
Name
Version
4.05.02
Arch
x86
OS support
Windows 9x
Size
358.095KB
Filename
Name
Version
3.7B / 3.7D
Arch
x86
OS support
MS-DOS
NetWare Server 3
NetWare Server 4
OS/2 Warp 3.x
Windows 3.1x
Windows 9x
Windows NT 3.5x
Size
1.58MB
Filename
Version
Arch
OS support
Size
Filename
No board documents available
Chip
Release date
File
Logs
Chip
Release date
File
Logs
Chip
Release date
File
Logs
Chip
Release date
File
Logs
Chip
Release date
File
Logs
Chip
Release date
File
Logs
Chip
Release date
File
Logs
Chip
Release date
File
Logs
Chip
Release date
File
Logs
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