1)red signal,supply cpu,ddr,usb&mp3,4,5 2)color :blue,green,.. 3)many model 4)good quality 5)capacity:1GB,2GB,4GB,8GB. 1)red signal,supply cpu,ddr,usb&mp3,4,52)color :blue,green,..3)many model4)good quality5)competitive price6)ddr ModelfrequencyspecificationcapabilityDDR 1400MHZ64*4512MBDDR 1400MHZ64*81GBDDR 2800MHZ64*81GBDDR 2800MHZ128*82GBDDR 31333MHZ256*82GB7)cpu8)usb RS-3004