Taipei, Taiwan, August 23, 2015 – Thanks to many participants’ valuable feedback and suggestions for QTS 4.2 Beta program, QNAP have completed several enhancements for its latest NAS operating system and today announced QTS 4.2 Release Candidate 1 is now available for download.

QNAP sincerely invite users to install QTS 4.2 Release Candidate 1 to experience the evolution of QTS and extend the possibilities of QNAP NAS. Users can also activate the live update function to receive any new firmware update notification by installing QTS 4.2 Release Candidate 1.

To download QTS 4.2 Release Candidate 1, please visit

For more information about QTS 4.2 Release Candidate 1 Release Note, please visit

Availability & Compatibility

QTS 4.2 Beta 2 is now available for the following QNAP NAS models:

  • 24-bay: SS-EC2479U-SAS-RP, TS-EC2480U-RP, TVS-EC2480U-SAS-RP
  • 18-bay: SS-EC1879U-SAS-RP
  • 16-bay: TVS-EC1680U-SAS-RP, TS-EC1680U-RP, TS-EC1679U-SAS-RP, TS-EC1679U-RP, TS-1679U-RP
  • 12-bay: SS-EC1279U-SAS-RP, TVS-EC1280U-SAS-RP, TVS-1271U-RP, TS-EC1280U-RP, TS-EC1279U-SAS-RP, TS-EC1279U-RP, TS-1279U-RP, TS-1270U-RP,TS-1269U-RP, TS-1253U-RP, TS-1253U
  • 10-bay: TS-1079 Pro, TVS-EC1080+, TVS-EC1080, TS-EC1080 Pro
  • 8-bay: TVS-EC880, TVS-871U-RP, TVS-871, TVS-870, TVS-863+, TVS-863, TS-EC880U-RP, TS-EC880 Pro, TS-EC879U-RP, TS-879U-RP, TS-879 Pro, TS-870U-RP, TS-870 Pro, TS-870, TS-869U-RP, TS-869L, TS-869 Pro, TS-859U-RP+, TS-859U-RP, TS-859 Pro+, TS-859 Pro, TS-853U-RP, TS-853U, TS-853S Pro, TS-853 Pro, TS-851, SS-839 Pro
  • 6-bay: TVS-671, TVS-670, TVS-663, TS-670 Pro, TS-670, TS-669L, TS-669 Pro, TS-659 Pro+, TS-659 Pro II, TS-659 Pro, TS-653 Pro, TS-651, TS-639 Pro
  • 5-bay: TS-569L, TS-569 Pro, TS-563, TS-559 Pro+, TS-559 Pro II, TS-559 Pro
  • 4-bay: TVS-471U-RP, TVS-471U, TVS-471, TVS-470, TVS-463, TS-470U-SP, TS-470U-RP, TS-470 Pro, TS-470, TS-469U-SP, TS-469U-RP, TS-469L, TS-469 Pro, TS-459U-RP+/SP+, TS-459U-RP/SP, TS-459 Pro+, TS-459 Pro II, TS-459 Pro, TS-453U-RP, TS-453U, TS-453S Pro, TS-453mini, TS-453 Pro, TS-451U, TS-451S, TS-451, TS-439U-RP/SP, TS-439 Pro II+, TS-439 Pro II, TS-439 Pro, TS-431U, TS-431+, TS-431, TS-421U, TS-421, TS-420U, TS-420-D, TS-420, TS-419U+, TS-419U II, TS-419U, TS-419P+, TS-419P II, TS-419P, TS-412U, TS-412, TS-410U, TS-410, SS-439 Pro, IS-400 Pro
  • 2-bay: TS-269L, TS-269H, TS-269 Pro, TS-259 Pro+, TS-259 Pro, TS-253 Pro, TS-251C, TS-251, TS-239H, TS-239 Pro II+, TS-239 Pro II, TS-239 Pro, TS-231+, TS-231, TS-221, TS-220, TS-219P+, TS-219P II, TS-219P, TS-219, TS-212P, TS-212-E, TS-212, TS-210, HS-251, HS-210
  • 1-bay: TS-131, TS-121, TS-120, TS-119P+, TS-119P II, TS-119, TS-112P, TS-112, TS-110

For more information about QTS 4.2, please visit

About QNAP

QNAP Systems, Inc., as its brand promise “Quality Network Appliance Provider”, aims to deliver comprehensive offerings of cutting edge network attached storage (NAS) and network video recorder (NVR) solutions featured with ease-of-use, robust operation, large storage capacity, and trustworthy reliability. QNAP integrates technologies and designs to bring forth quality products that effectively improve business efficiency on file sharing, virtualization applications, storage management and surveillance in the business environments, as well as enrich entertainment life for home users with the offering of a fun multimedia center experience. Headquartered in Taipei, QNAP delivers its solutions to the global market with nonstop innovation and passion.

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