Comtrol RocketPort EXPRESS PCI Express 32-Port Serial Card Model 30138-7 Type: PCI Express to Serial Port Card External Ports: 1 x Serial Port Data Transfer Rate: Up to 460 Kbps Operating Systems Supported: FreeBSD 5 FreeBSD 6 QNX 6.X SCO OpenServer 5 SCO OpenServer 6 Linux Microsoft Windows 7 Microsoft Windows 2008 Server Microsoft Windows Vista Microsoft Windows Server 2003 Microsoft Windows XP Microsoft Windows NT 4.0 (Legacy) Microsoft Windows 2000 (Legacy) Specifications: Host Interface: PCI-Express x1 Ports: DB9M (RS-232, RS-422, RS-485 Software-selectable Serial Ports) Ports Expandability: 32 x 9-pin DB-9 Male RS-232/422/485 - Serial, Via Cable (Optional) Maximum Cards/System: 4 Bus Interface Specification: PCI Express (PCIe) x1, x2, x4, x8, x12, x16-Lane Compatible Board Dimensions: 4.7 x 2.6 (Low-profile) / 119.4 x 66 mm Product Weight: 15.6 oz / 442.25 g Ba...