SafeNet ProtectServer Gold is a PCI-X-compliant expansion card, while SafeNet ProtectServer Internal-Express is a PCI Express x4-compliant card. Both HSMs offer different performance levels to meet varied system requirements: 25, 220, or 600 RSA 1024-bit signatures per second.<br /><br /><br />ProtectServer HSMs provide secure storage and a dedicated cryptographic processor to deliver high-speed cryptographic processing for cryptographic operations and fast transaction speeds. ProtectServer Gold offers 4MB secure storage while ProtectServer Internal-Express offers double this amount. The HSMs provide a wide range of cryptographic services, including encryption, user and data authentication, message integrity, secure key storage and key management for eCommerce,<br />PKI, document management, Electronic Bill Presentation and Payment (EBPP), database encryption, financial EFT transactions, plus many others.