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SCSI Adapters - SCSI Connector Adapters, HD68, HD50, CN50, DB25, VHDCI, SCA, SCA2
SCSI Adapters - SCSI Connector Adapters, HD68, HD50, CN50, DB25, VHDCI, SCA, SCA2
Using the correct scsi adapter is crucial to the ability of your scsi drives and peripherals to work properly at their maximum speed. SCSI Adapters have different types of scsi connectors and/or "genders" of connectors on each end. They are used for connecting a scsi device with one type of connector to a scsi cable or other scsi device with another type of connector. Unfortunately there have been quite a few "standard" connectors over scsi's long history. As scsi got faster and "wider", it was necessary to update the connector types to newer, "better", "faster" connector types. Since you don't want to have a seperate scsi card for each blasted type of scsi device or connector, it's far easier, and less costly to use a scsi adapter. So this is the function of the scsi adapter. Another important point when considering scsi adapters is the "wide" and "narrow" or "high byte" "low byte" problem. "Wide scsi" means 16 bit or 2 "bytes" (8 bits make a byte) scsi. Narrow scsi is 1 byte (8 bits) scsi. Connecting wide devices to a narrow bus or narroww devices to a wide bus must be done with the proper scsi adapter which takes the termination problems into account. Wide scsi devices will work just fine using only the first byte, and therefore can be used on a narrow bus (cable) as long as their connected using a scsi adapter with high byte termination. Narrow devices can be used on a wide bus, without problems depending on whether or not they are connected to an "LVD" (Ultra2/Ultra160) segment. Connecting narrow scsi devices to an LVD bus will cause that segment to drop out of LVD mode. In the case of connecting narrow external devices to a scsi controller card with an external LVD connector, it is often a good idea to use an internal/external scsi adapter to "move" an internal narrow bus to the outside of the case to connect scanners, zip drives and other external scsi peripherals.
SCSI Information:
•The basics of SCSI for newbies and technical information
•SCSI Connectivity FAQ
•SCSI Connector Pictures
FR1SX Firewire-Ultra SCSI Converter
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Firewire - Ultra SCSI converter for pc/mac 2 firewire ports. Connect your SCSI devices through your Firewire port. 6-pin Firewire female to HD50 SCSI male
HD68 male to IDC50 male adapter with High Byte Termination, offset connectors on vertical adapter.
HD68-HD50 SCSI Adapter, SM026A
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External HD68 Female to HD50 Male SCSI Adapter, with Active High Byte Termination
SCA SCSI Adapter, 460I-2CN80MF
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SCA SCSI Adapter, SCA80 FFemale to IDC50 Male and HD68 Female. Connect your SCA Drive to Wide SCSI or Narrow SCSI.
SCSI Adapter with Bracket, ADT-21114
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SCSI Internal-External Adapter IDC50 male to HD50 Female on L Bracket. IDC50 male internal connector to adapt SCSI-1/SCSI-2 systems with no external connector to have an external SCSI 50-pin High Density connector (HPDB50) (HPDB50 / MiniD50 female mounted on bulkhead bracket
SCSI Adapter, CN50 male to HD50 Female. Centronics CN50 male to 50 position, high Density HD50 (HPDB50 / MiniD50) female
SCSI Adapter DB25 Female to HD50 Male. SCSI adapter, DB25 Female to 50-pin, high density, (SCSI-2 / SCSI-3 HPDB50 / MiniD50) Male
SCSI Adapter DB25 male to HD50 Female. ADT-21064-A SCSI adapter, DB25 Male to 50-pin SCSI-2 / SCSI-3 HPDB50 (MiniD50/HD50) Female
SCSI adapter, CN50 female to HD68 Male, Connect your older SCSI-1 devices to your new Wide SCSI Host Adapter
SCSI adapter, CN50 Male to HD68 Female, Connect your SCSI-1 devices to your Wide SCSI Host Adapter
SCSI Adapter, IDC50 Female to HD68 Male. Wide SCSI 68-pin High Density (HPDB68 / MiniD68) Male, to 50 position narrow internal connector, molded
IDC50 female to HD68 female Adapter, for connecting tape drives, CDROMs or non-wide hard drives to Wide SCSI internal cables. HD68 is often called HPDB68 or MiniD68. This Adapter has no high byte termination, so it is ideal for narrow drives in the middle of a Wide cable. Using a high byte terminated adapter in the middle of a wide cable would normally cause extreme problems.
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