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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 in wide by 0.276–0.374 in high and 2.362 in deep (69.85 mm × 7–9.5 mm × 60 mm). The
472:
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
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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″
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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. Often represented as 5.25-inch, these floppy disk drives are obsolete. As the name indicates, two half-height devices can fit in one
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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-inch hard drives may range from 7 mm to 15 mm in height. There are two heights that appear to be prominent. 9.51 mm size drives are
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and some higher capacity drives (above 1 TB), are 15 mm in height. The greater height of the 15 mm drives allows 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
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have had many form factors of drive bays. Four form factors are in common use today, the 5.25-inch, 3.5-inch, 2.5-inch or 1.8-inch 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.
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actual dimensions of the 54 mm × 78 mm are 2.126 in wide by 0.197 or 0.315 in high and 3.091 in 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.
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bays, like their larger counterparts, are named after diskette dimensions; their actual dimensions are 4 inches (101.6 mm) wide by 1.028 inches (26.1 mm) high. Those with an opening in the front of the case are generally used for
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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
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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-inch-wide square.
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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 (
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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
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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
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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
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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).
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to power or recharge devices made to draw power from automobiles, though USB is already available for charging devices like
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ports. A 3.5″ drive containing both a card reader and a floppy drive, as well as a USB port, is also available.
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437:, which were incorporated into the EIA-720 specification by the Electronic Industries Association (EIA).
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341:, which were incorporated into the EIA-740 specification by the Electronic Industries Association (EIA).
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From left to right: full-height 5.25″ drive, two half-height 5.25″ drives, and (sideways) a 3.5″ drive
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The remaining half-height bay usually contained an additional floppy drive or a hard disk drive.
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to a computer. Most drive bays are fixed to the inside of a case, but some can be removed.
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with one full-height 5.25-inch drive bay containing a half-height 5.25-inch floppy drive
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controllers, tool storage, and other uses. Some computers have a small
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datasheet: WD VelociRaptor
Workstation Hard Drives (2.5-inch version)
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inches (69.9 mm) wide, between 5 millimetres (0.20 in) and
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27:
Standard-sized area for adding drives or other hardware to a computer
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inches (146.1 mm) wide, and are the standard housing for
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More recently, it is becoming common to use 3.5″ bays for
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drive are specified in the SFF standard specifications
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drive are specified in the SFF standard specifications
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drive are specified in the SFF standard specifications
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drive bays are divided into two height specifications,
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Crystalfontz CFA-635, a 5.25-inch-bay LCD (front view)
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Crystalfontz CFA-635, a 5.25-inch-bay LCD (back view)
559:Internal memory card reader, a 3.5-inch-bay device
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449:, although they can also be used for front-end
128:inches (361.9 mm) deep, and were used for
114:inches (241.3 mm) wide, and approximately
49:Over the years since the introduction of the
390:predominantly used by laptop manufacturers.
445:Drive bays are most commonly used to store
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322:readers, or for panels with additional
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177:in the early to mid-1980s. They were
42:is a standard-sized area for adding
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270:floppy drive are specified in the
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576:List of disk drive form factors
74:drive bays were found in early
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637:. p. 1 Retrieved on 2008-04-13
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621:. p. 1 Retrieved on 2008-04-13
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240:inches (41.3 mm) high by
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1:
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475:cigarette lighter receptacles
100:inches (117.5 mm) high,
469:LCD mounted in a drive bay.
365:bays, actual dimensions are
191:inches (82.6 mm) high,
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311:device in a 5.25″ bay.
294:A 3.5-inch floppy drive
173:bays were found in old
483:portable media players
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392:2.5-inch Velociraptor
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152:A 5.25-inch DVD drive
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666:Computer peripherals
425:The dimensions of a
398:The dimensions of a
329:The dimensions of a
266:The dimensions of a
633:Specification v1.4
617:Specification v1.1
461:, fan controllers,
82:computers, and the
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18:3.5-inch drive bay
509:IBM PC compatible
453:ports, I/O bays,
355:solid-state drive
278:). Dimensions of
263:full-height bay.
16:(Redirected from
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84:TRS-80 Model II
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55:its compatibles
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635:SFF Committee
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136:drives. This
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455:card readers
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86:. They were
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62:Form factors
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490:cup holders
479:cell phones
447:disk drives
353:A 2.5-inch
320:memory card
224:Half-height
171:Full-height
165:half-height
161:full-height
138:form factor
134:floppy disk
78:computers,
602:References
571:Device Bay
316:smart card
144:5.25-inch
506:white box
414:1.8-inch
345:2.5-inch
286:3.5-inch
268:5.25-inch
157:5.25-inch
67:8.0-inch
53:, it and
40:drive bay
660:Category
649:, Page 2
631:SFF-8301
615:SFF-8501
565:See also
504:A 1980s
435:SFF-8120
431:SFF-8111
427:1.8-inch
419:1.8-inch
408:SFF-8201
404:SFF-8200
400:2.5-inch
363:2.5-inch
339:SFF-8301
335:SFF-8300
299:3.5-inch
72:8.0-inch
44:hardware
384:⁄
374:⁄
249:⁄
235:⁄
215:⁄
200:⁄
186:⁄
123:⁄
109:⁄
95:⁄
304:floppy
51:IBM PC
582:Notes
441:Usage
357:(SSD)
481:and
463:RAID
459:fans
433:and
406:and
361:For
337:and
331:3.5″
318:and
280:5.25
258:and
163:and
132:and
80:CP/M
451:USB
324:USB
308:Zip
306:or
276:EIA
272:SFF
260:DVD
175:PCs
76:IBM
662::
492:.
485:.
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256:CD
167:.
116:14
38:A
386:4
382:3
376:4
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242:5
237:8
233:5
230:+
228:1
217:8
213:7
210:+
208:5
202:4
198:3
195:+
193:5
188:4
184:1
181:+
179:3
125:4
121:1
118:+
111:2
107:1
104:+
102:9
97:8
93:5
90:+
88:4
20:)
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