• Drive Slow Genius
• Pc Optical Drive Slot
• Printers With Flash Drive Slot
• Drive Slot Is Dropping Frames
• Drive Solutions Llc
• M.2 Drive Slot
• Drive Slot Predictive Failure

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Drive Slow Genius

A drive bay is a standard-sized area for adding hardware to a computer. Most drive bays are fixed to the inside of a case, but some can be removed.

Over the years since the introduction of the IBM PC, it and its compatibles have had many form factors of drive bays. Four form factors are in common use today, the 5.25″, 3.5″, 2.5″ or 1.8″ drive bays. These names do not refer to the width of the bay itself, but rather to the width of the disks used by the drives mounted in these bays.

Form factors[edit]

8.0″[edit]

8.0″ drive bays were found in early IBM computers, CP/M computers, and the TRS-80 Model II. They were 4⁵⁄₈ inches (117.5 mm) high, 9¹⁄₂ inches (241.3 mm) wide, and approximately 14¹⁄₄ inches (361.9 mm) deep, and were used for hard disk drives and floppy disk drives. This form factor is obsolete.

5.25″[edit]

Full-height bays were found in old PCs in the early to mid-1980s. They were 3¹⁄₄ inches (82.6 mm) high, 5³⁄₄ inches (146.1 mm) wide, and up to 8 inches (203.2 mm) deep, used mainly for hard disk drives and floppy disk drives. This is the size of the internal (screwed) part of the bay, as the front side is actually 5⁷⁄₈ inches (149.2 mm). The difference between those widths and the name of the bay size is because it is named after the size of floppy that would fit in those drives, a 5.25″-wide square.

Half-height drive bays are 1⁵⁄₈ inches (41.3 mm) high by 5³⁄₄ inches (146.1 mm) wide, and are the standard housing for CD and DVD drives in modern computers. They were sometimes used for other things in the past, including hard disk drives (roughly between 10 and 100 MB) and floppy disk drives. As the name indicates, two half-height devices can fit in one full-height bay. Often represented as 5.25-inch, these floppy disk drives are obsolete.

The dimensions of a 5.25″ floppy drive are specified in the SFF standard specifications which were incorporated into the EIA-741 'Specification for Small Form Factor 133.35 mm (5.25 in) Disk Drives' by the Electronic Industries Association (EIA).^[1] Dimensions of 5.25 optical drives are specified in the SFF standard (they are somewhat shorter and not only size of the body is standardized, but also size of the bezel).

3.5″[edit]

3.5″ bays, like their larger counterparts, are named after diskette dimensions; their actual dimensions are 4 inches (101.6 mm) wide by 1 inch (25.4 mm) high. Those with an opening in the front of the case are generally used for floppy or Zip drives. Hard drives in modern computers are typically mounted in fully internal 4″ (nominally 3.5″) bays. Most modern computers do not come with a floppy drive at all, and may lack any externally accessible 3.5″ bays. There are adapters, sometimes called a 'sled', which can be used to mount a 3.5″ device in a 5.25″ bay.

More recently, it is becoming common to use 3.5″ bays for smart card and memory card readers, or for panels with additional USB ports.

The dimensions of a 3.5″ drive are specified in the SFF standard specifications SFF-8300 and SFF-8301 which were incorporated into the EIA-740 specification by the Electronic Industries Association (EIA).^[2]

2.5″[edit]

For 2.5″ bays, actual dimensions are 2³⁄₄ inches (69.9 mm) wide, between 5 millimetres (0.20 in) and ³⁄₄ inch (19.1 mm) high, and 3.955 inches (100.5 mm) deep. However, most laptops have drive bays smaller than the 15 mm specification. 2.5″ hard drives may range from 7 mm to 15 mm in height, there are two sizes that appear to be prominent. 9.51 mm size drives are predominantly used by laptop manufacturers, however at present 2.5″ Velociraptor^[3] and some higher capacity drives (above 1 TB), are 15 mm in height. The greater height of the 15 mm drives allow more platters and therefore greater data capacities. Many laptop drive bays are designed to be removable trays in which the drives are mounted, to ease removal and replacement.

The dimensions of a 2.5″ drive are specified in the SFF standard specifications SFF-8200 and SFF-8201 which were incorporated into the EIA-720 specification by the Electronic Industries Association (EIA).

1.8″[edit]

1.8″ bays have two specifications, a 60 mm × 70 mm form factor, and a 54 mm × 78 mm form factor. The actual dimensions of the 60 mm × 70 mm are 2.75″ wide by 0.276–0.374″ high and 2.362″ deep (69.85 mm × 7–9.5 mm × 60 mm). The actual dimensions of the 54 mm × 78 mm are 2.126″ wide by 0.197 or 0.315″ high and 3.091″ deep (54 mm × 5 or 8 mm × 78.5 mm). These drives have been used in small devices including as add-ons to game systems.

The dimensions of a 1.8″ drive are specified in the SFF standard specifications SFF-8111 and SFF-8120 which were incorporated into the EIA-720 specification by the Electronic Industries Association (EIA).

Usage[edit]

Drive bays are most commonly used to store disk drives, although they can also be used for front-end USB ports, I/O bays, card readers, fans, fan controllers, RAID controllers, tool storage, and other uses. Some computers have a small system monitor LCD mounted in a drive bay.

When installing a drive in a bay, it is usually secured with four screws that hold the drive in the bay, although toolless fasteners are becoming more common. Then, any necessary power, data transfer, and other cables are routed into and connected to the rear of the drive. The drive bay is usually just big enough for the drive to fit inside. Since computers have 12 V rails on their motherboards, some computer hobbyist websites even sell addons for cigarette lighter receptacles to power or recharge devices made to draw power from automobiles, though USB is already available for charging devices like cell phones and portable media players.

Drive bay-compatible computer case accessories that do not connect to the motherboard or power supply at all are also common, such as small storage drawers or even cup holders.

• A 1980s white boxIBM PC compatible with one full-height 5.25-inch drive bay containing a half-height 5.25-inch floppy drive^[a]

• Crystalfontz CFA-635, a 5.25-inch-bay LCD (front view)

• Crystalfontz CFA-635, a 5.25-inch-bay LCD (back view)

• A dual-HDD rack, made as a 5.25-inch-bay device capable of simultaneously holding a 2.5-inch and a 3.5-inch SATA HDD, with two additional USB 3.0 ports

• Internal memory card reader, a 3.5-inch-bay device

Pc Optical Drive Slot

Printers With Flash Drive Slot

See also[edit]

Notes[edit]

Drive Slot Is Dropping Frames

1. ^The remaining half-height bay usually contained an additional floppy drive or a hard disk drive.

References[edit]

1. ^SFF-8501 Specification v1.1 SFF Committee. p. 1 Retrieved on 2008-04-13
2. ^SFF-8301 Specification v1.4 SFF Committee. p. 1 Retrieved on 2008-04-13
3. ^datasheet: WD VelociRaptor Workstation Hard Drives (2.5-inch version), Page 2

Drive Solutions Llc

M.2 Drive Slot

Each module contains two slots for tape drives. The drives slide into the slot from the back of the module.

Caution:

Equipment damage. Do not touch the drive tray circuit card or static sensitive components. The circuit card is located on the right side of the drive tray.

Drive Slot Predictive Failure

1. Follow accepted practices to prevent ESD.
2. Remove the tape drive filler from the slot (see Remove the Drive Slot Cover).
3. Remove the drive tray from the shipping carton. Handle the drive tray by the rear corners (close to the thumbscrews) and the bottom of the tray. Avoid contact with the top cover of the actual tape drive.
4. Grasp the rear corners of the drive tray and guide the front of the drive tray into the library drive slot. Push the drive tray completely into the drive slot.
5. Tighten the thumbscrews. Ensure there is no tray movement in any direction.
6. Connect the interface cable to the port on the left side of the drive.