This particular LNB is the MK4 Quad LNB; this means it has Four outputs making it ideal to fit Sky+ or Sky+HD which require two feeds each from the LNB. You could have 4 standard boxes, 2 + / HD or a combination
The Quad LNB we supply is the latest available and approved, it is the same Quad LNB used when they do a new installation or come out to do a service call resulting in the LNB being changed.
The Technical Bit
Four outputs
Suitable for MK4 Satellite dishes + More if you have a different Lnb Collar that fits the 40mm recess
Remove existing MK4 LNB bracket as follows:
Use pliers to hold the pin legs together and push it up and out. Use two small flat-blades (screwdrivers or similar), one each side, to push the sides wide and unhook the two tabs. You can then push the LNB bracket up from the back and remove it.