Additional Details ------------------------------ Product description: Compatible with Cisco Servers C220 M4,C240 M4, B200 M4, B420 M4. Not compatible with normal Desktop PCs Wondering if your server will be compatible? We offer free technical support from our own certified technical. Adamanta memory modules comes with limited Lifetime Warranty so you know you will have the support for your investment. Don't trust just any memory module out there. Adamanta memory is fully tested by the manufacturer and verified by CMTL. Are you looking for a different quantity? Let us know! You can reach always us through Amazon secured e-mail. Your product may have a different appearance than listed images.