Table of Contents

HDHomeRun FLEX

For the most recent documentation and help with ATSC 3.0 broadcasts, please visit our support forum here: https://forum.silicondust.com/forum/viewforum.php?f=133

The HDHomeRun FLEX is similar to the 5th generation CONNECT, but adds a USB port for use with the HDHomeRun DVR.
Model numbers Tuners Signal type
FLEX DUO HDFX-2US 2 ATSC 1.0 & QAM64/256 x 2
FLEX QUATRO HDFX-4US 4 ATSC 1.0 & QAM64/256 x 4
HDFX-4DT 4 DVB-T/T2 & DVB-C (including 4K broadcasts)
FLEX 4K HDFX-4K 4 Both ATSC 3.0 and 1.0 are supported on 2 tuners
ATSC 1.0-only is supported on the other 2 tuners
(all tuners also support QAM64/256)
Works with HDHomeRun DVR Yes
Size 3.4“x3.4”x0.8“
Ports Antenna, Ethernet (100baseTX), Power, USB (for DVR)
Power supply

12 Volt 1 Amp regulated power adapter (higher Amp rating ok)
1.3mm ID / 3.4mm OD plug, 9.5mm depth, center positive
Noise ⇐ 150mVp-p

Replacement:
10 Year Extended Life power adapter: HDHomeRun P122013EL

Updating firmware

See: Updating firmware

DVR storage mode

See also: DVR

  • The USB port can also act as an extended buffer for pausing live TV in the HDHomeRun app, and that pause-buffer feature is free to all users.
  • One-off “record this airing” recordings, made up to three days in advance, are free for HDHomeRun FLEX customers. No account is necessary.
  • Recording more than three days in advance, and setting up automatic or “series” recording tasks, require a Full Guide DVR subscription.
  • We recommend avoiding USB “thumb” or “stick” drives, as they are normally not designed for prolonged use.
  • Solid State Drives (SSDs) are supported, but not required. A mechanical spinning hard disk drive (HDD) will easily support recording four simultaneous channels at the same time.
  • We recommend at least 500GB or larger. 500GB will provide approximately 150 hours of DVR recording.
  • The FLEX supports up to 18TB of storage. A drive larger than 18TB will work however the FLEX will only use the first 18TB of the larger drive.
  • The USB port will support 5 volts up to 1.0 amps of power with the included power supply.

Setting up the USB hard drive on the FLEX:

  1. Plug a USB hard drive into the FLEX's USB port
  2. In a web browser go to http://hdhomerun.local
    1. NOTE: That address will go do the first HDHomeRun device found on your network. If you have more than one HDHomeRun device, use the “device ID” printed on the bottom of the unit instead of “hdhomerun” in the address. For example, if your device ID was 104FFFFF then you would go to http://104fffff.local
  3. Then click the “Format” button. That will erase and format the hard drive for recordings, and when it is done you will be all set up

Once the DVR storage is ready, you will be able to set recordings and watch them from any device running the HDHomeRun app, as long as you are connected to the same local network.

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