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Chapter 2: Hardware information
2.4.2 Memory congurations
You may install 256 MB, 512 MB, 1 GB and 2GB unbuffered ECC/non-ECC DDR2
DIMMs into the DIMM sockets.
• Always install DIMMs with the same CAS latency. For optimum
compatibility, we recommend that you obtain memory modules from
the same vendor. Visit the ASUS website (www.asus.com) for the latest
Qualied Vendors List.
• When using only one DDR DIMM module, install it into slot DIMM_A1 or
DIMM_B1.
• For dual-channel memory conguration, install the DIMMs in slots
DIMM_B1 and DIMM_A1 (yellow slots); install another pair of DIMMs in
slots DIMM_B2 and DIMM_A2 (black slots).
Table 1 Recommended memory congurations
* For dual-channel conguration (2), you may:
• install identical DIMMs in all four sockets
or
• install identical DIMM pair in DIMM_A1 and DIMM_B1 (yellow
sockets)
Sockets
Mode DIMM_A1 DIMM_B1 DIMM_A2 DIMM_B2
Single-channel — Populated — —
Populated — — —
Dual-channel (1) Populated Populated — —
Dual-channel (2)* Populated Populated Populated Populated