| AC | Alternating Current |
| ACL | Access Control List |
| ACPI | Advanced Configuration Power Interface |
| ADF | Automatic Document Feeder |
| ADSL | Asymmetrical Digital Subscriber Line |
| AES | Advanced Encryption Standard |
| AHCI | Advanced Host Controller Interface |
| AP | Access Point |
| APIPA | Automatic Private Internet Protocol Addressing |
| APM | Advanced Power Management |
| ARP | Address Resolution Protocol |
| ASR | Automated System Recovery |
| ATA | Advanced Technology Attachment |
| ATAPI | Advanced Technology Attachment Packet Interface |
| ATM | Asynchronous Transfer Mode |
| ATX | Advanced Technology Extended |
| AUP | Acceptable Use Policy A/V Audio Video |
| BD-R | Blu-ray Disc Recordable |
| BIOS | Basic Input/Output System |
| BD-RE | Blu-ray Disc Rewritable |
| BNC | Bayonet-Neill-Concelman |
| BSOD | Blue Screen of Death |
| BYOD | Bring Your Own Device |
| CAD | Computer-Aided Design |
| CAPTCHA | Completely Automated Public Turing test to tell Computers and Humans Apart |
| CD | Compact Disc |
| CD-ROM | Compact Disc-Read-Only Memory |
| CD-RW | Compact Disc-Rewritable |
| CDFS | Compact Disc File System |
| CERT | Computer Emergency Response Team |
| CFS | Central File System, Common File System, or Command File System |
| CGA | Computer Graphics and Applications |
| CIDR | Classless Inter-Domain Routing |
| CIFS | Common Internet File System |
| CMOS | Complementary Metal-Oxide Semiconductor |
| CNR | Communications and Networking Riser |
| COMx | Communication port (x=port number) |
| CPU | Central Processing Unit |
| CRT | Cathode-Ray Tube |
| DaaS | Data as a Service |
| DAC | Discretionary Access Control |
| DB-25 | Serial Communications D-Shell Connector, 25 pins |
| DB-9 | Serial Communications D-Shell Connector, 9 pins |
| DBaaS | Database as a Service |
| DC | Direct Current |
| DDoS | Distributed Denial of Service |
| DDR | Double Data Rate |
| DDR RAM | Double Data Rate Random Access Memory |
| DFS | Distributed File System |
| DHCP | Dynamic Host Configuration Protocol |
| DIMM | Dual Inline Memory Module |
| DIN | Deutsche Industrie Norm |
| DLT | Digital Linear Tape |
| DLP | Digital Light Processing or Data Loss Prevention |
| DMA | Direct Memory Access |
| DNS | Domain Name Service or Domain Name Server |
| DoS | Denial of Service |
| DRAM | Dynamic Random Access Memory |
| DRM | Digital Rights Management |
| DSL | Digital Subscriber Line |
| DVD | Digital Versatile Disc |
| DVD-RAM | Digital Versatile Disc-Random Access Memory |
| DVD-ROM | Digital Versatile Disc-Read Only Memory |
| DVD-R | Digital Versatile Disc-Recordable |
| DVD-RW | Digital Versatile Disc-Rewritable |
| DVI | Digital Visual Interface |
| DVI-D | Digital Visual Interface--Digital |
| ECC | Error Correcting Code |
| ECP | Extended Capabilities Port |
| EEPROM | Electrically Erasable Programmable Read-Only Memory |
| EFS | Encrypting File System |
| EIDE | Enhanced Integrated Drive Electronics |
| EMI | Electromagnetic Interference |
| EMP | Electromagnetic Pulse |
| EPROM | Erasable Programmable Read-Only Memory |
| EPP | Enhanced Parallel Port |
| ERD | Emergency Repair Disk |
| eSATA | External Serial Advanced Technology Attachment |
| ESD | Electrostatic Discharge |
| EULA | End User License Agreement |
| EVGA | Extended Video Graphics Adapter/Array |
| Ext2 | Second Extended File System |
| exFAT | Extended File Allocation Table |
| FAT | File Allocation Table |
| FAT12 | 12-bit File Allocation Table |
| FAT16 | 16-bit File Allocation Table |
| FAT32 | 32-bit File Allocation Table |
| FDD | Floppy Disk Drive |
| FPM | Fast Page Mode |
| FSB | Front-Side Bus |
| FTP | File Transfer Protocol |
| FQDN | Fully Qualified Domain Name |
| GDDR | Graphics Double Data Rate |
| GDI | Graphics Device Interface |
| GUI | Graphical User Interface |
| GUID | Globally Unique Identifier |
| GPS | Global Positioning System |
| GPT | GUID Partition Table |
| GPU | Graphics Processing Unit |
| GSM | Global System for Mobile Communications |
