UMC

UMC are a motherboard chipset manufacturer for PC compatibles. They also produced some CPUs under license from Intel before designing their own.

UM82C210

A chipset designed for 286 or 386SX PCs.

Called "Twinstar", this was a 386 chipset.

This was an 80386 chipset that supported 40 MHz processors such as the Am386DX-40.

A 486 motherboard chipset

Motherboards that use this chipset are:

This was an 80386 chipset.

Award BIOS Chipset Code: 214X2 or 2C4X2

Motherboards that use this chipset are:

This was an 80386 and 80486 chipset. Supports write-back level 1 cache.

Award BIOS Chipset Code: 2C4X6

Another 486 chipset. Supports write-back level 1 cache.

Award BIOS Chipset code: 2A4X5

Motherboards that use this chipset are: