NEO 2.2
Manufactured by Neo Technologies of the UK. It has the capabilities of playing:

• PSX & PS2 local original without swap
• PSX local & import backup with swap.
• PS2 local & import CDR with a swap & DVDR with double swap.

A boot Disc is required to swap CDR backup games with AR2 for PAL machine, GS2 for US/NTSC machine. Also a DVD game with higher TOC than a DVDR backup's is required to play DVDR games. This chip is one of the oldest modchip ever released, yet it has a good compability with almost all PS2 models:

• SCPH 30001/1R
• SCPH 30002/2R
• SCPH 30003/3R
• SCPH 30004/4R
• Main board v1, v2, v3, v4 & v5.

To install this chip, you don't need an excellent soldering skills, in most cases, owners are able to install the chip themselves. Number of Wire: 5/8.

S BOX a.k.a. NEO KEY
S Box is Manufactured by Modchip.com, whereas Neo Key is manufactured by Neo Technologies. It has the capabilities of playing:

• PSX local original & local & import backup.
• PS2 local original without swap.
• PS2 and local & import CDR & DVDR backup with swap.

Boot Disc required is AR2 for PAL machine and GS2 for US/NTSC machine. Also aDVD games with higher TOC than DVDR backup's is needed to play DVDR games. Compability: Work on all PS2 models. It is very easy to install the chip, because you just need to install 1 wire.

X-KEY a.k.a. NEO 2.5
Manufactured by Neo Technologies with capabilities of playing:

• PSX local original & local & import backup.
• PS2 local original without swap.
• PS2 import original, local & import CDR/DVDR backup with swap.

Easy installation. Numbers of wires required for soldering are 5. Boot Disc required is AR2/GS2 v1.7 or higher. It is Compatible with:

• SCPH 30001/1R
• SCPH 30002/2R
• SCPH 30003/3R
• SCPH 30004/4R
• Main board v4 & v5.
  
  

ORIGA 1.0 (US) / 1.12 (PAL) / 1.25 (JAP)
They are manufactured by Origa Elettronica of Italy. This chip is one of the famous and reliable ones with the capabilities of playing:

• PSX local & import original & local & import backup without swap.
• PS2 local & import original without swap (for Jap/US).
• PS2 local & import CDR/DVDR backup with swap.

Boot Disc required: AR2/GS2 v1.7 or higher, DVD Region X. It is compatible with:

• SCPH 30001
• SCPH 35001
• Main board v3 & v4 (US)
• SCPH 30002/2R/3/3R/4/4R
• Main board v3, v4 & v5 (PAL).
• SCPH 10000, 15000 and 18000 and 30000 (JAP).

To install this chip, you need a good soldering skill, even better is required, because one of the soldering point is hard to be done. Number of Wires: 14.

Neo 4.0/4.1/4R
Neo 4.0 is a first no swap modchip manufactured by Neo Technologies. However after one month of its release, Neo Tech was given legal pressures by Sony and decided to stop its development. Neo 4.1/ 4R / Clip bios and gap bios are believed to be developed under Hong Kong company, Euro Link Technology. It has the capabilities of playing:

• PSX local & import original & local & import backup without swap.
• PS2 local original & local & import CDR backup without swap.
•  PS2 local & import DVDR backup with swap.
• Multiregion DVD movies.
• Macrovision disabled.
• RGB correction enabled.

A boot disc required is only a local DVD game original with higher TOC than backup's to play DVDR games. It is compatible with:

• SCPH 30001 & 35001 v1, v2, v3, v4 (US)
• SCPH 30002/3/4 & SCPH 35002/3/4 - Main board v3 & v4 (PAL)
• SCPH 30000 (JAP).

Neo 4.0 and 4.1 are the ones that are the hardest to be installed. Actually, one with good soldering skills is enough as long as one can be patient and one's hand must not shake. Number of wire: 44. Neo 4.1 with clip for PS2 with gap bios and no gap bios only need 11 wires to be installed.

MESSIAH LITE
You should already have heard/known this name. The messenger of CT calls it the gamer's savior. Okay, this is the first true non-swap modchip for PS2 developed by Kvak and hDL under Channel Technology. It is also the first chip that uses FBGA device, made by Actel of HK. Most says the chip's code cannot be cracked, because it is made using secured 128-bit encryption data. Its capabilities are:

• PSX local & import original & local & import backup without swap.
• PS2 local & import original & local & import CDR/DVDR backup without swap.

No boot/swap disc required to boot CDR/DVDR backup games. It is compatible with:

• SCPH 30001 and SCPH 35001 - Main board v4 (gap bios only).
• SCPH 3002/2R/3/3R/4/4R - Main board v3, v4 and v5.

Skills needed are varied. For installing v3 PAL PS2, you need to have a good soldering skill as it is very complicated to do. Moderate skills for installing onto v4 and v5. Number of Wire: 23.

No Solder R Mod (Plug-in)
This chip is only PS2 with R suffix without wires to be installed, (for v5 and v6) manufactured by third party (unknown) with capabilities of playing:

• PSX local original & local & import backup.
• PS2 local original without swap.
• PS2 local & import CDR/DVDR backup with swap.

Boot Disc required are AR2/GS2 1.7 or higher & DVD games original with TOC higher than backup. it is compatible with:

• SCPH 30001R/2R/3R/4R/5R/6R/7R - Main board v5 and v6.