经查询，S3420GPLC Server  (Intel) 主板只支持内存颗粒位宽为×8的内存（System supports x8 DRAM modules only）。KVR1333D3D4R9S/4G和KVR1333D3D4R9S/8G颗粒位宽为×4，所以不支持。推荐内存为 KVR1333D3E9S/2G，KVR1333D3E9S/4G，KVR1333D3D8R9SL/4G，KVR1066D3Q8R7S/8G        P7F-E Motherboard  (ASUS/ASmobile)主板支持列表中的RECC内存颗粒位宽均为×8，据此判断颗粒位宽为×4可能不做支持，推荐内存为：KVR1333D3E9S/2G，KVR1333D3E9S/4G，KVR1333D3D8R9SL/4G， KVR1066D3Q8R7S/8G         S5500BC Server  (Intel) 主板同样在支持列表中的RECC内存颗粒均为×8，且1333MHz RECC内存最大容量仅2GB，推荐内存为：KVR1333D3E9S/2G，KVR1333D3E9S/4G，KVR1333D3D8R9S/2G，KVR1066D3Q8R7S/4G          S5520HC/S5520HCV Server  (Intel) 主板支持单根KVR1333D3D4R9S/8G，用户能开机但无法进入操作系统可能属于兼容性问题，推荐使用通过Intel认证的内存尝试，推荐内存： KVR1333D3D4R9S/8GI，KVR1333D3D4R9SK2/16GI，KVR1333D3D4R9SK3/24GI 。另外该主板使用1333MHz内存会自动降频至1066MHz和800MHz，原文如下请参考： Kingston's DDR3-1333 modules automatically clock down to 1066MHz and 800MHz depending on which Intel Xeon model is installed and how many module banks are populated. Please refer to the system manual for proper installation of DIMMs for Single, Dual, and Triple Channel configurations.