SOYO SY-6IEB User's Manual & Technical Reference page 18

Hardware Setup
Your board comes with two DIMM sockets, providing support for up
to 256MB of main memory using DIMM modules from 8MB to
128MB with no restriction on memory configuration. Therefore, you
can install memory modules in any combination.
Memory Configuration
MEMORY
CONFIGURATION
RAM Type
RAM Module Size (MB)
Note : There are two types of DIMM modules with different
operating voltages: 3.3V and 5.0V. Please note that only
3.3V EDO DIMM modules can be used on this mainboard.
Step 4. IDE Device Installation (HDD, CD-ROM)
This mainboard offers two primary and secondary IDE device
connectors (IDE1, IDE2.) It can support up to four high-speed HDD
or CD-ROM.
Connect one side of the 40-pin flat cable to the IDE device (HDD or
CD-ROM) and plug the other end to the primary (IDE1) or secondary
(IDE2) directionally keyed IDE connector on the mainboard.
This mainboard can support up to four HDDs.
Step 5. Floppy Drive Installation
The system supports 5 possible floppy drive types: 720 KB, 1.2 MB,
1.44 MB, 2.88 MB, and LS-120. In addition, this mainboard supports
a 3-mode (720KB/1.2MB/1.44MB) floppy commonly used in Japan.
Connect one side of the 34-pin flat cable to the floppy drive and plug
the other end to the floppy drive connector on the mainboard.
This mainboard can support up to 2 floppy drives.
DIMM Banks
DIMM 1
EDO/SDRAM
8/16/32/64/128
15
SY-6IEB
DIMM 2
EDO/SDRAM
8/16/32/64/128