Asrock H77m (£59) or Asrock H77 Pro4-M (£62)?

[King Mustard]

They seem very similar, both having:

• mATX
• 2x USB3
• 2x SATA3
• 4x SATA2
• Realtek ALC892

The differences seem to be:

Asrock H77m (£59)

• 6x USB2
• 1 x PCI Express 3.0 x16 slot (PCIE1: x16 mode)
• 1 x PCI Express 2.0 x16 slot (PCIE2: x4 mode)
• 2 x PCI slots

Asrock H77 Pro4-M (£62)

• 4x USB2
• 1 x PCI Express 3.0 x16 slot (PCIE1: x16 mode)
• 2 x PCI Express 2.0 x16 slots (PCIE3: x1 mode; PCIE4: x4 mode)
• 1 x PCI Express 2.0 x1 slot
• 1 x eSATA3

I doubt I'll be using CrossFireX, so I may as well go for the cheaper one and gain the 2x extra USB2 ports, yep?

 

[Chairman Ray]

Also assuming you aren't using the eStat, then go for the cheaper one

 

[djangoringo]

You forgot something, the h77m has two dimm slots, the h77 pro4-m has four dimm slots, it has also more two SATA III ports by asmedia(4 SATA III/ 4 SATA II), i would get the h77 pro4-m because it has more features for just 3£.
Unless you don't need those at all.