• Enhanced Parallel Port Ring topology
  
• Interrupt request Rip
  
• Amp RISC
  
• Boot Record Riser Card
  
• Precision RJ-11
  
• World Wide Web (WWW) RJ-45
  
• Enterprise Resource Planning rlogin
  
• ICMP RMON
  
• Super XGA RMON2
  
• Petabyte RMS
  
• DSTN ROB
  
• FAT-16 Robot
  
• PPP ROFL
  
• Microsoft Certified System Engineer ROFL, ROTFL, ROTFLMAO, ROTFLMAOSTC
  
• DIMM ROM
  
• Web Root
  
• DDR SDRAM Root directory
  
• Buffered memory Root Mean Square
  
• Video Cassette Recorder ROP
  
• freeware router
  
• Direct Memory Access RPC
  
• Socket 5 RPG
  
• XSL RPM
  
• Smalltalk RS-232
  
• Ctrl rsn
  
• Zettabyte rtf
  
• Enhanced IDE rtfm
  
• Intermediate Code RTM
  
• Full parity Runtime
  
• Very Long Instruction Word Runtime Error
  
• Folder Runtime Library
  
• Optical Character Recognition S-Video