SOYO Pentium SiS 551x User's Manual & Technical Reference page 18

Hardware Setup
256K Pipelined Burst Cache Configuration (White Caps)
CPU
Figure 2-2. 256K Pipelined Burst Cache Configuration
512K Pipelined Burst Cache Configuration (White Caps)
256KB Pipelined Burst upgrade module has to install into Pipelined Burst Module
A
Slot (J23).
Figure 2-3. 512K Pipelined Burst Cache Configuration
CAUTION: Contact your supplier for Pipelined Burst upgrade module to
upgrade your onboard cache SRAM up to 512KB.
15
Intel CPU
(default)
JP40