# item.guide

Computer Components

7 categories

Physical and electrical specifications for modular PC and server hardware, covering processor packaging architectures, memory generations, storage form factors, graphics expansion buses, memory cards, and universal serial buses.

Categories

Graphics Cards

7 items

Graphics expansion slot standards (PCI Express) and dedicated high-bandwidth video memory architectures (GDDR5, GDDR6, GDDR6X, HBM, HBM2, HBM3).

GDDR5 • GDDR6 • GDDR6X • HBM • HBM2 • HBM3 • PCIe

Memory Cards

10 items

Standardized solid-state removable flash memory card form factors, physical bus architectures, and speed rating systems established by the SD Association, CompactFlash Association, and legacy camera manufacturers.

CFast • CFexpress • CompactFlash • microSD • MultiMediaCard (MMC) • SD Bus Interfaces • SD Card • SD Speed Classes • Sony Memory Stick • xD-Picture Card

Power Connectors & PCB Packages

3 items

Standardized computer power distribution interfaces and surface-mount (SMD) component footprints: PCIe 12VHPWR / 12V-2x6 high-power graphics card connectors, ATX/EPS mainboard power pinouts, and EIA/JEDEC SMD chip dimensions.

ATX & EPS Power Supply Pinouts • PCIe 12VHPWR & 12V-2x6 Connectors • Surface Mount (SMD) Passive Packages

Processors

6 items

Industry-standard central processing unit (CPU) packaging and socket technologies (LGA, PGA, BGA) alongside dominant instruction set architectures (x86-64, ARM, RISC-V).

ARM • BGA • LGA • PGA • RISC-V • x86-64

RAM

5 items

Generational DDR SDRAM volatile memory standards defined by JEDEC (DDR through DDR5), specifying pin counts, operating voltages, bandwidths, and DIMM/SO-DIMM mechanical notch alignments.

DDR • DDR2 • DDR3 • DDR4 • DDR5

SSD

5 items

Solid-state drive (SSD) physical form factors and electrical bus interfaces, including M.2, 2.5-inch SATA, mSATA, enterprise U.2, and PCIe Add-in Cards (AIC).

2.5-Inch SATA • M.2 • mSATA • PCIe AIC • U.2

USB

13 items

Universal Serial Bus (USB) standards established by the USB-IF, detailing physical connector form factors (Type-A, Type-B, Type-C), transfer speed generations (USB 1.1 through USB4 2.0), and USB Power Delivery (USB-PD).

Micro-USB • Mini-USB • USB 1.1 • USB 2.0 • USB 3.2 Gen 1 • USB 3.2 Gen 2 • USB 3.2 Gen 2x2 • USB Power Delivery • USB-A • USB-B • USB-C • USB4 • USB4 2.0