Product UPC: 012303495247 Cisco High-Speed - Expansion module - RS-232 x 8 - for Cisco 18XX, 1921 4-pair, 1921 ADSL2+, 19XX, 28XX, 29XX, 3845 V3PN, 38XX, 39XX. The 8-port asynchronous HWIC (HWIC-8A) provides 8 asynchronous RS-232 interfaces in DTE format, at data rates of up to 23
30 Day Warranty Included. Extended warranty is available. Contact your sales rep for more information.