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 2025-03-13T16:56:37Z
Board info score is 6.6/10
Chips
-
Chipset part
-
Audio
CPU family support
0 BIOS files available
7 drivers available
Name
Version
OS support
Size
Filename
Name
Version
3.00
OS support
OS/2 Warp 3.x
Windows NT 3.5x
Windows NT 4.0
Size
1.2MB
Filename
Name
Version
3.00
OS support
OS/2 Warp 3.x
Windows NT 3.5x
Windows NT 4.0
Size
1.2MB
Filename
Name
Version
3.3.0.2
OS support
Windows 9x
Size
569.7KB
Filename
Name
Version
3.02.0.0
OS support
Windows 9x
Size
577.8KB
Filename
Name
Version
4.05.02
OS support
Windows 9x
Size
358.1KB
Filename
Name
Version
3.7B / 3.7D
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
1.6MB
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
Family
Release date
File
Logs
Family
Release date
1997-06
File
Logs
Family
Release date
1997-08
File
Logs
Image 1 of 1
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