HP 443899-001 - Modem board - 56Kbps, v1.5, Harley C (North America) - Does not include modem cable Retail
HP 331429-001 - Modem board - 56Kbps, V.90, Mini-3 ITU modem with shielding - Includes detachable connector cable with RJ-11 port (United States) Retail