Asus AP1600R User Guide - Page 25

2.4 System memory 2.4.1 Overview The motherboard comes with four Double Data Rate (DDR) Dual Inline Memory Modules (DIMM) sockets. 104 Pins 80 Pins NCL-DS1R1 184-pin DDR DIMM sockets ® NCL-DS1R1 DIMM_B4 DIMM_A4 DIMM_B3 DIMM_A3 DIMM_B2 DIMM_A2 DIMM_B1 DIMM_A1 2.4.2 Memory configurations You may install 256 MB, 512 MB, 1 GB, and 2 GB registered ECC DDR DIMMs into the DIMM sockets. • Always install DIMMs with the same CAS latency. For optimum compatibility, it is recommended that you obtain memory modules from the same vendor. Refer to the DDR Qualified Vendors List on the ASUS website for details. • Due to chipset resource allocation, the system may detect less than 16 GB system memory when you install eight 2 GB DDR memory modules. • Three DDR DIMMs intalled into any three memory sockets will function in single-channel mode. • If installing only one pair of DIMMs, install them in sockets DIMM_B4 and DIMM_A4. ASUS AP1600R-E2 (CS3) 2-7