AH28K72M4BHC4S is a 1Gbit (128MB) SDRAM memory module from ATP Electronics. It is a 72-pin, PC100-compliant, 16Mx72, 1.2V SDRAM designed for use in servers, servers/workstations, communications, data storage and related products. It has a transfer rate of 100MHz, clock cycle time of 10ns, and a CAS latency of 3. It is a non-ECC, unbuffered SDRAM and operates over a wide temperature range (-40°C to +85°C).