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What does this mean ?

The disk controller (or "hard disk controller") is the circuit which allows the CPU to communicate with a hard disk, floppy disk or other kind of disk drive.

Early disk controllers were identified by their storage methods and data encoding. They were typically implemented on a separate controller card. Modified frequency modulation (MFM) controllers were the most common type in small computers, used for both floppy disk and hard disk drives. Run length limited (RLL) controllers used data compression to increase storage capacity by about 50%. Priam created a proprietary storage algorithm that could double the disk storage. Shugart Associates Systems Interface, (SASI) was a predecessor to SCSI.

Main article: Hard drive

Modern disk controllers are integrated into the disk drive. For example, disks called "SCSI disks" have built-in SCSI controllers. In the past, before most SCSI controller functionality was implemented in a single chip, separate SCSI controllers interfaced disks to the SCSI bus.

The most common types of interfaces provided nowadays by a disk controllers are ATA (IDE) and Serial ATA for home use. High-end disks use SCSI, Fibre Channel or Serial Attached SCSI.
 

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Controller Cards

Compare controller cards prices from a wide range of UK shops on Mister-Price UK. Browse through the controller cards offers below, showing the best controller cards from Adaptec, HP, Belkin and more.

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Startech.Com Serial adapter

Startech.Com Serial adapter

The StarTech.com 2 port PCI Serial card is the latest in Plug and Play high-speed serial expansion cards. It provides two high performance 16C950 UART channels ...

 Dell Business
£29.36
+ more choice
Startech.Com 1 Port Parallel Dual Voltage / Dual...

Startech.Com 1 Port Parallel Dual Voltage / Dual...

This high performance EPP/ECP parallel card adds one IEEE 1284 port to your PC, with data transfer speeds of up to 1.5 Mbits/sec - up to 3 times faster than built-in ...

 Dell Business
£24.26
+ more choice
Startech.Com PCIExpress to ExpressCard Adapter

Startech.Com PCIExpress to ExpressCard Adapter

Needing to interface your laptop ExpressCard to your desktop? The Startech's PEX2EC is the best solution for adding an ExpressCard slot to your desktop computer. ...

 Dell Business
£21.39
+ more choice
Startech.Com Video input adapter

Startech.Com Video input adapter

Add FireWire capabilities to your laptop with a two-port IEEE-1394 cardbus card from StarTech.com. With 400 Mbits/sec of data transfer, this card is ideal for digital ...

 Dell Business
£18.85
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Belkin Belkin PRO Series Audio cable

Belkin Belkin PRO Series Audio cable

Belkin Components is the preeminent technology leader in connectivity solutions for the computer and consumer electronics user. Producing the highest-quality cabling ...

 Dell Business
£2.80
+ more choice
Startech.Com EC230USB USB adapter

Startech.Com EC230USB USB adapter

Take advantage of USB 2.0 transfer rates and the power of the ExpressCard bus with EC230USB. Compliant with the ExpressCard Type II (34mm) standard, EC230USB offers ...

 Dell Business
£13.96
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Startech.Com 1 Port PCI 16950 RS232 Dual Voltage /...

Startech.Com 1 Port PCI 16950 RS232 Dual Voltage /...

StarTech.com's PCI1S950DV gives you high performance 16C950 serial UART channels/ports for connecting any new or old serial peripheral, with data transfer rates ...

 Dell Business
£21.04
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Startech.Com 1 Port CardBus/PCMCIA to PCI Adapter...

Startech.Com 1 Port CardBus/PCMCIA to PCI Adapter...

A perfect, cost-effective solution, this innovative card creates a PCMCIA port on your computer - in other words, you save the cost of separate adapters that perform ...

 Dell Business
£17.87
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Startech.Com PCI2S1P Parallel/serial adapter

Startech.Com PCI2S1P Parallel/serial adapter

Need serial and parallel connectivity? StarTech.com's PCI2S1P slot saver PCI card gives you two 16C550 serial ports with data transfer up to 460.8 Kbits/sec, and ...

 Dell Business
£23.50
+ more choice
Startech.Com USB adapter

Startech.Com USB adapter

Want to plug into today's most advanced USB peripherals? With speeds up to 40 times faster than USB 1.1, StarTech.com's PCI420USB is your ticket to high-speed action. ...

 Dell Business
£13.05
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Startech.Com 2 Port Serial ATA and 1 Port ATA/133...

Startech.Com 2 Port Serial ATA and 1 Port ATA/133...

Not quite ready for complete Serial ATA dedication? No problem, StarTech.com's PCISAT2IDE1 slot-saver PCI is the perfect way to upgrade to high-speed Serial ATA ...

 Dell Business
£23.25
+ more choice
Startech.Com PCI330USB2 USB adapter

Startech.Com PCI330USB2 USB adapter

Want to plug into today's most advanced USB peripherals? With speeds up to 40 times faster than USB 1.1, the StarTech.com's PCI330USB2 is your ticket to high-speed ...

 Dell Business
£10.53
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Startech.Com PCI1P Parallel adapter

Startech.Com PCI1P Parallel adapter

Get more out of your parallel peripherals! StarTech.com's PCI1P helps your old parallel devices perform like never before! This value priced EPP/ECP parallel card ...

 Dell Business
£11.43
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Startech.Com 2 Port ExpressCard IEEE1394 Firewire...

Startech.Com 2 Port ExpressCard IEEE1394 Firewire...

Providing a versatile FireWire solution, EC13942 offers data transfer rates of up to 400Mbps, providing a stable platform for virtually any FireWire peripheral ...

 Dell Business
£42.43
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Startech.Com PCI2PECP Parallel adapter

Startech.Com PCI2PECP Parallel adapter

StarTech.com's PCI2PECP is a high performance PCI Parallel Port add-in card giving users 2 additional Parallel IEEE 1284 EPP/ECP ports that allows to connect printers, ...

 Dell Business
£29.48
+ more choice
431 results | Page 1 of 29 | next page