Asus AS-D777 User Manual page 24

2.3
2.3.1
240-pin DDR2 DIMM sockets
2.3.2
DDR
2-10
240-pin DDR2 DIMM Double Data Rate
DDR2 DIMM
®
256MB 512MB 1GB
(DIMM_A1+DIMM_A2 = DIMM_B1+DIMM_B2).
CAS latency
4GB
128 Mb
DDR DIMM
x16
unbuffered non-ECC
DDR2
1 GB