You are purchasing directly from the developer & manufacturer of True USB Willem universal programmer series: better pricing and better support. 

This GQ-4X V4 (GQ-4X4) programmer is the enhanced & upgraded version of GQ-4X and newly launched in the market. 

The following table is a comparison table between GQ-4X4 and GQ-4X:

GQ-4X4 is the newest model of True USB Willem Universal Programmer series from MCUmall Electronics Inc Canada. 

With its complete new professional design, True USB PRO 40pin willem programmer GQ-4X is the first & exclusive Willem universal programmer in the market that owns the unique features: 

• Neat robust enclosure; 40pin ZIF socket, fully automatic; JTAG support; Fast mode SPI support
• Support Windows O/S XP 32bit 64bit, Vista 32bit,Vista 64bit; Window7/8/10/11 32bit and 64bit
• Real True USB interface for both data transfer and power supply
• High speed/fastest; most-user-friendly; simplest-to-use
• Software update regularly; free lifetime software upgrade/download
• Multi-languages support capability: Chinese, Czech, English, French, German, Spanish, Portuguese 
  

The application-oriented & application-enhanced design facilitates GQ-4X4 supports thousands of most popular application devices (growing) and ideally suits the portable/convenient applications that includes: car automotive field ECU chiptuning, airbag reset, mileage, satellite devices, BIOS refreshing, motherboard BIOS in-circuit upgrade, Xbox,Wii gaming machines EPROM duplicate, Altera Xilinx JTAG, PIC/MCU development, newer laptop technology and newer desktop PC etc.

It has outstanding performance which supports the devices that other similar products are not capable of supporting: such as 25LF SPI series, PSOP44, TSOP48, 25VF SPI series, Altera Xilinx CPLD JTAG, PLCC84, SST39VF3201, TE28F102, 27C1024, 27C1028, HD6475,29F800, 29LV800, 29F032... 

Key & Unique Features 

1. Complete new professional design with own robust enclosure and 40pin ZIF socket 

• Neat robust enclosure is designed to suit the portable and field convenient applications
• 40 pin of the ZIF socket supports more chips without the adapter
• First and only Willem programmer with 40pin ZIF socket, other models use 32pin ZIF
• The software & hardware are Designed/developed by MCUmall Electronics Inc. Canada
• Assembled in Canada and post-sales support by MCUmall Electronics Inc.

2. Fully automatic & no manual set-up needed (eliminate all jumpers & DIP-switch) 

• Fully automatic for efficient use and extends the programmer lifetime
• Eliminates all jumpers on board, manual set-up for jumpers is no longer needed (all non-USB Willem use jumpers: 16 jumpers on PCB5.0C, 48 jumpers on Willem 1.5)
• Eliminate the on-board DIP switch, manual set-up for DIP switch is no longer needed.
• This also makes much easier & very simple to use for end users.
• Plug-and-play reduces the learning curve and save your precious time.

3. Fast mode SPI programming & JTAG support wider the application 

• Useful for motherboard BIOS in-circuit upgrade
• Altera Xilinx CPLD JTAG support

4. True USB data transfer interface with PC/Laptop for newer laptop use as well as portable application 

• Uses only one USB cable to connect with PC/Laptop USB port for both data transfer and power supply. The bulky DB25 data cable is eliminated & no longer needed for data transfer between PC and programmer board
• It is True/Real USB data transmission protocol (USB-USB), Not via Fake/Pseudo-USB data communication.
• Fake/Pseudo USB data transfer needs the middle serial or parallel port conversion: USB-Serial-USB conversion or LPT-USB conversion, this limits the programming speed significantly.
• GQ-4X features the same revolutionary data interface as GQ-3X, the True USB data transmission with PC/Laptop.

5. Exponentially speed increase up to 20 times faster 

• Connects PC via the high-speed USB link, provides the fastest possible data transfer rates for programming/reading data from target IC's.
• It is capable of being up to 20 times faster than other existing printer port willem (parrellel LPT willems: PCB6.xx, PCB5.0C, PCB4.5C) programmers on reading & verification a high-density flash device, this significantly saves your time and increases work efficiency as well as facilitates small scale production
• Assembly language written programming algorithms run fast and reliable. Not affected by the PC speed changes and Windows O/S variations.

6. Dual power supply capability: USB port & AC/DC and automatic voltage control 

• Vcc supported among: 3.6V, 5V, 5.5V, 6.5V
• On-Board MCU for stable performance & automatic/accurate voltage control
• Works best among other programmers for EPROMs

7. The GQUSB software is especially developed for True USB willem programmers GQ-4X, GQ-4X V4, GQ-3X, GQ-2X. 

• Free lifetime software download/upgrade, please click here for software revision history
• Updates software and device algorithm regularly
• Free IC device updates via web
• Support Windows O/S XP 32bit 64bit, Vista 32bit,Vista 64bit; Window7/8/10/11 32bit and 64bit
• Advanced software engineered to provide most user-friendly interface & simplest and easiest-to-use Willem programmer version to save time and comfort to use
• Multi-language support, such as: English, German, Spanish, Chinese, French, Czech, Portuguese
• Programming history memory function on-board
• Supports most popular ECU, Satellite, Xbox, Wii, BIOS, EPROM chips: SST39VF3201, TE28F102, 27C1024, 29F800, 29LV800...
• Supports the chips that LPT Willem are not capable of supporting, like 24RF08,28F102,87C257 and more
• Supports TSOP48, PSOP44, 16bit EPROM chips that 40 pin TOP, EasyPro, Wellon are not capable of supporting
• Supports 25LF SPI series, 25VF SPI series, Altera Xilinx CPLD JTAG, PLCC84,29F032...
• Allows end users to add in their own chips/devices easily (editing .txt file)

8. Working with the adapters further expands the supported devices list 

• Accommodate the existing adapters (GQ-3X/2X and parallel LPT willem adapter)
• Packaging supported: TSOP48 (16bit & 8 bit), TSOP32, PSOP44, DIP8 to DIP40, PLCC, SOP,SOIC, MCS-51+, PLCC84, and etc.

9. Covers the widest application areas amount all Willem programmers 

• Car/automotive ECU chip tuning, airbag reset, mileage, memory device code read/write/program
• Satellite large capacity device applications
• On-spot/Field/portable applications & Small scale production
• Motherboard BIOS in-circuit upgrading
• Xbox, wii gaming chip freshing & upgrading
• PIC & MCU programming & development
• Duplicate EPROM chips & Game machine repairing
• Copier/Fax machine/printer main board reparing
• VCD, DVD, color TV maintaining& repairing

The intellectual property owner of USB Willem Programmer MCUmall True USB GQ-4X, GQ-3X & GQ-2X: MCUmall Electronics Inc.

The package includes 

• One True-USC Willem Programmer with High-Quality 40pin ZIF (MCUmall GQ-4X)
• One USB Cable (for both power supply and data communication)
• One ADP-005 PLCC32-DIP32 socket adapter or ADP-048 PLCC28-DIP24 adapter
• One ADP-006 PLCC32-DIP28 socket adapter or ADP-049 PLCC20-DIP20 adapter
• One ADP-004 adapter
• One PLCC IC extractor