The Asus P8H77-V LE uses the Intel LGA 1155/Socket H2 CPU socket. Any compatible Intel CPU will have the same socket entry. It uses the DDR3 memory type, with maximum speeds of up to 2133 MHz, and 4 DDR3 slots allowing for a maximum total of 32 GB RAM. 

Conforming to the ATX standard, the Asus P8H77-V LE should fit into the majority of cases. ATX is the most common form factor, and as such has a high degree of compatibility with other components while providing a decent number of slots to widen your expansion options. 

The Asus P8H77-V LE has 2 SATA 3.0 hard drive slots. These allow for theoretical data transfer speeds of up to 6GB/s, as opposed to the 3GB/s of SATA 2.0. Generally speaking, only high performance hard drives, specifically solid-state drives, will be able to take advantage of the bandwidth potential of SATA 3.0 ports, though it is backwards compatible, so you do not have to take advantage. This motherboard also has 4 SATA 2.0 slots, so numerous SATA hard drives can be connected if desired. 

The Asus P8H77-V LE supports onboard graphics. This allows for integrated graphics when paired with a compatible CPU that supports them. Integrated graphics are a cheap alternative to using a graphics card, but should be avoided when frequently using modern applications or games that require intense graphical processing. There are 1 PCIe x16 slots on this motherboard. This means it is perfectly capable of accommodating the latest graphics cards, although it is important to try and use a graphics card with the same graphics card interface of PCIe v3.0, as anything below will not reach the motherboard's potential, and anything above will have its performance slashed to the bandwidth maximum of the Asus P8H77-V LE's PCIe v3.0. The Asus P8H77-V LE supports up to 4 AMD Crossfire connected graphics cards for improved overall graphical performance at the cost of multiplied graphics-based power consumption as well as the price of the cards themselves. Nvidia SLI is not supported.

The Asus P8H77-V LE has 10 USB 2.0 slots and 4 USB 3.0 slots. USB 3.0 slots are theoretically capable of data transfer speeds of up to 5 Gbit/s, which is over 10 times faster than the USB 2.0 top speed of 480 Mbit/s. Although USB 2.0 slots alone currently serve as well as ever, an upgrade would better future-proof your system as more USB 3.0 compatible peripherals emerge. USB 3.0 is also backwards compatible with USB 2.0, which means you do not even have to use the newer slot functionality if you do not wish to.

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The supported CPUs list of the ASUS P8H77-V LE motherboard: 

Celeron G470 (2.0G,1C,HT,35W,32nm,L3:1.5MB,HD,rev.Q0)

Core i3-2100 (3.1G,L3:3M,iGPU,2C,rev.Q0)

Core i3-2100T (2.5G,L3:3M,iGPU,2C,rev.Q0)

Core i3-2105 (3.1G,L3:3M,iGPU,2C,rev.D2)

Core i3-2120 (3.3G,L3:3M,iGPU,2C,rev.Q0)

Core i3-2120T (2.6G,L3:3M,iGPU,2C)

Core i3-2125 (3.3G,L3:3M,iGPU,2C)

Core i3-2130 (3.4G,L3:3M,iGPU,2C)

Core i3-3210 (3.2G,L3:3M,iGPU,GT1,55W,2C,rev.P0)

Core i3-3220 (3.3G,L3:3M,iGPU,2C,rev.E1)

Core i3-3220 (3.3G,L3:3M,iGPU,2C,rev.L1)

Core i3-3220 (3.3G,L3:3M,iGPU,2C,rev.N0)

Core i3-3220 (3.3G,L3:3M,iGPU,2C,rev.P0)

Core i3-3220T (2.8G,L3:3M,iGPU,2C,rev.L1)

Core i3-3220T (2.8G,L3:3M,iGPU,2C,rev.P0)

Core i3-3225 (3.3G,L3:3M,iGPU,2C,rev.L1)

Core i3-3240 (3.4G,L3:3M,iGPU,2C,rev.L1)

Core i3-3240 (3.4G,L3:3M,iGPU,2C,rev.P0)

Core i3-3240T (2.9G,L3:3M,iGPU,2C,rev.L1)

Core i3-3240T (2.9G,L3:3M,iGPU,2C,rev.P0)

Core i3-3245 (3.4G,2C,HT,L3:3M,55W,GT1,rev.L1)

Core i3-3250 (3.5G,2C,HT,L3:3M,55W,GT1,rev.P0)

Core i3-3250T (3.0G,2C,HT,L3:3M,35W,GT1,rev.P0)

Core i5-2300 (2.8G,L3:6M,iGPU,4C,rev.D2)

Core i5-2310 (2.9G,L3:6M,iGPU,4C,rev.D2)

Core i5-2320 (3.0G,L3:6M,iGPU,4C,rev.D2)

Core i5-2380P (3.1G,L3:6M,non-iGPU,4C,rev.D2)

Core i5-2390T (2.7G,L3:3M,iGPU,2C,rev.Q0)

Core i5-2400 (3.1G,L3:6M,iGPU,4C,rev.D2)

Core i5-2400S (2.5G,L3:6M,iGPU,4C,rev.D2)

Core i5-2405S (2.5G,L3:6M,iGPU,4C,rev.D2)

Core i5-2450P (3.2G,L3:6M,non-iGPU,4C,rev.D2)

Core i5-2500 (3.3G,L3:6M,iGPU,4C,rev.D2)

Core i5-2500K (3.3G,L3:6M,iGPU,4C,rev.D2)

Core i5-2500S (2.7G,L3:6M,iGPU,4C,rev.D2)

Core i5-2500T (2.3G,L3:6M,iGPU,4C,rev.D2)

Core i5-2550K (3.4G,L3:6M,non-iGPU,4C,rev.D2)

Core i5-3330 (3.0G,L3:6M,iGPU,4C,VT-d,77W,rev.E1)

Core i5-3330 (3.0G,L3:6M,iGPU,4C,VT-d,77W,rev.N0)

Core i5-3330S (2.7G,L3:6M,iGPU,4C,VT-d,65W,rev.E1)

Core i5-3340 (3.1G, L3:6M, GT1, 4C, VT-d,77W, rev.E1)

Core i5-3340 (3.1G, L3:6M, GT1, 4C, VT-d,77W, rev.N0)

Core i5-3340S (2.8G, L3:6M, GT1, 4C, VT-d, 65W, rev.E1)

Core i5-3350P (3.1G,L3:6M,4C,69W,rev.E1)

Core i5-3350P (3.1G,L3:6M,4C,69W,rev.N0)

Core i5-3450 (3.1G,L3:6M,iGPU,4C,VT-d,77W,rev.E1)

Core i5-3450S (2.8G,L3:6M,iGPU,4C,VT-d,65W,rev.E1)

Core i5-3470 (3.2G,L3:6M,iGPU,4C,VT-d,77W,rev.N0)

Core i5-3470S (2.9G,L3:6M,iGPU,4C,VT-d,65W,rev.N0)

Core i5-3470T (2.9G,L3:3M,iGPU,DC,VT-d,35W,rev.L1)

Core i5-3550 (3.3G,L3:6M,iGPU,4C,VT-d,77W,rev.E1)

Core i5-3550S (3.0G,L3:6M,iGPU,4C,VT-d,65W,rev.E1)

Core i5-3570 (3.4G,L3:6M,iGPU,4C,VT-d,77W,rev.N0)

Core i5-3570K (3.4G,L3:6M,iGPU,4C,77W,rev.E1)

Core i5-3570S (3.1G,L3:6M,iGPU,4C,VT-d,65W,rev.N0)

Core i5-3570T (2.3G,L3:6M,iGPU,4C,VT-d,45W,rev.E1)

Core i7-2600 (3.4G,L3:8M,iGPU,4C,rev.D2)

Core i7-2600K (3.4G,L3:8M,iGPU,4C,rev.D2)

Core i7-2600S (2.8G,L3:8M,iGPU,4C,rev.D2)

Core i7-2700K (3.5G,L3:8M,iGPU,4C,rev.D2)

Core i7-3770 (3.4G,L3:8M,iGPU,4C,HT.VT-d,77W,rev.E1)

Core i7-3770K (3.5G,L3:8M,iGPU,4C,HT,77W,rev.E1)

Core i7-3770S (3.1G,L3:8M,iGPU,GT2,4C,HT,VT-d,65W,rev.E1)

Core i7-3770T (2.5G,L3:8M,iGPU,GT2,4C,HT,VT-d,45W,rev.E1)

Intel Celeron G1610 (2.6GHz,55W,L3:2MB,2C,rev.P0)

Intel Celeron G1610 (2.6GHz,55W,L3:2MB,2C,rev.P0)

Intel Celeron G1610T (2.3GHz,35W,L3:2MB,2C,rev.P0)

Intel Celeron G1610T (2.3GHz,35W,L3:2MB,2C,rev.P0)

Intel Celeron G1620 (2.7GHz,55W,L3:2MB,2C,rev.P0)

Intel Celeron G1620 (2.7GHz,55W,L3:2MB,2C,rev.P0)

Intel Celeron G1620T (2.4GHz, 2C, 35W, L3:2MB, rev.P0)

Intel Celeron G1630 (2.8GHz, 55W, L3:2MB, 2C, rev.P0)

Intel Celeron G440 (1.6G,35W,32nm,1MB,1C)

Intel Celeron G460 (1.8G,35W,32nm,1.5MB,1C)

Intel Celeron G465 (1.9G,35W,32nm,1.5MB,1C)

Intel Celeron G530 (2.4G,65W,32nm,2MB,2C)

Intel Celeron G530T (2.0G,35W,32nm,2MB,2C)

Intel Celeron G540 (2.5G,65W,32nm,2MB,2C)

Intel Celeron G540T (2.1G,35W,32nm,2MB,2C)

Intel Celeron G550 (2.6G,65W,32nm,2MB,2C)

Intel Celeron G550T (2.2G,35W,32nm,2MB,2C)

Intel Celeron G555 (2.7G,65W,32nm,2MB,2C)

Intel Pentium G2010 (2.8GHz,55W,22nm,3MB,2C,rev.E1)

Intel Pentium G2010 (2.8GHz,55W,22nm,3MB,2C,rev.L1)

Intel Pentium G2010 (2.8GHz,55W,22nm,3MB,2C,rev.N0)

Intel Pentium G2010 (2.8GHz,55W,22nm,3MB,2C,rev.P0)

Intel Pentium G2010 (2.8GHz,55W,22nm,3MB,2C,rev.P0)

Intel Pentium G2020 (2.9GHz,55W,22nm,3MB,2C,rev.P0)

Intel Pentium G2020 (2.9GHz,55W,22nm,3MB,2C,rev.P0)

Intel Pentium G2020T (2.5GHz,35W,22nm,GT1,L3:3MB,2C,rev.P0)

Intel Pentium G2020T (2.5GHz,35W,22nm,GT1,L3:3MB,2C,rev.P0)

Intel Pentium G2100T (2.6GHz,35W,22nm,3MB,2C,rev.P0)

Intel Pentium G2120 (3.1GHz,55W,22nm,3MB,2C,rev.P0)

Intel Pentium G2130 (3.2GHz,55W,22nm,3MB,2C,rev.P0)

Intel Pentium G620 (2.6G,65W,32nm,3MB,2C,rev.Q0)

Intel Pentium G620T (2.2G,35W,32nm,3MB,2C,rev.Q0)

Intel Pentium G630 (2.7G,65W,32nm,3MB,2C)

Intel Pentium G630T (2.3G,35W,32nm,3MB,2C)

Intel Pentium G640 (2.8G,65W,32nm,3MB,2C)

Intel Pentium G640T (2.4G,35W,32nm,3MB,2C)

Intel Pentium G645 (2.9G,65W,32nm,3MB,2C)

Intel Pentium G645T (2.5G,35W,32nm,3MB,2C)

Intel Pentium G840 (2.8G,65W,32nm,3MB,2C,rev.Q0)

Intel Pentium G850 (2.9G,65W,32nm,3MB,2C,rev.Q0)

Intel Pentium G860 (3.0G,65W,32nm,3MB,2C,rev.Q0)

Intel Pentium G860T (2.6G,65W,32nm,3MB,2C,rev.Q0)

Intel Pentium G870 (3.1G,65W,32nm,3MB,2C,rev.Q0)

Intel Xeon E3-1230 (3.2G,1333,L3:8MB,4C,D2)  

 *Since Xeon CPU is not desktop CPU model, some feature may not able to work on this combination. 

Intel Xeon E3-1230 v2 (3.3G,L3:8M,4C,HT,69W)

*Since Xeon CPU is not desktop CPU model, some feature may not able to work on this combination. 

Intel Xeon E3-1245 v2 (3.4G,L3:8M,4C,HT,77W)

*Since Xeon CPU is not desktop CPU model, some feature may not able to work on this combination. 

Pentium G2030 (3.0GHz,55W,2C,GT1,22nm,L3:3MB,rev.P0)

Pentium G2030T (2.6GHz,35W,2C,GT1,22nm,L3:3MB,rev.P0)

Pentium G2120T (2.7GHz,35W,2C,GT1,22nm,L3:3MB,rev.P0)

Pentium G2140 (3.3GHz,55W,2C,GT1,22nm,L3:3MB,rev.P1)