Model names ending in "C" only: Run the manufacturer's AutoSCSI configuration utility and check the termination and that the Advanced option "BIOS Support for > 2 Drives (DOS 5.0 or above)" is set to No.
BT-757C only: If the system has a narrow target, turn off the "wide negotiation option" when configuring devices.
Select an adapter model ending in "C" as the primary controller.
Choose an I/O address for the primary controller that precedes the secondary controller in "Supported Settings"; for example, use an I/O address of 0x234 for the primary controller, and make sure the secondary controller uses either 0x130 or 0x134.
Disable the BIOS on the secondary controller.
Wide-mode EISA adapters can support targets greater than 7 if the proper entries are added to the system configuration files: /kernel/drv/sd.conf (for disk) and /kernel/drv/st.conf (for tape).