What is Willem Programmer? Willem programmer is the most popular hobby level universal programmer. The first willem is designed by Mr. Wilem from Netherland about 10 years ago. How do I know a Willem programmer is a USB Willem or parrelell Willem/LPT Willem? The rule to determine a willem programmer is a USB interface or parrellel interface is that if the willem programmer requres a DB25 Data cable and if the set up requires your PC/Laptop must have a printer port for data transfer. All existing Willem programmers are parrellel Willem programmers except MCUmall GQ-2X, MCUmall GQ-3X.   Why do I need a USB Willem programmer? Ask youself the following questions, if yes, please buy-it-now. Do I need a cost-for-performance programmer? Do I need free software upgrade after purchaser?  Do I need use the programmer for on-spot/field application? Do I need hight speed for my application such that I will not to wait for ages for reading/writing a chip ? Do I need small scale production? Why parrellel/LPT willem programmer can not be used for certain applications? All existing LPT programmers, like PCB5.xx, PCB4.5x, etc, these programmers use LPT/Parrellel port (computer printer port) for data transmission/data transfer. These programmers require a computer DB25 printer cable for data communication to PC through parellel port as well as require the PCs or laptops must have parrellel printer port.  So these parellel willem programmers can NOT be used for portable applications, like newer laptop with only USB port and NOT feasible for on-spot, field applications, like on-spot chip tuning .  What is the peformance level of LPT willem in the market in terms of speed? As the existing parrellel programmers' programming speed can not be qualitatively leaped even some designs improve speed by percentage (less than 100%) over other designs, so, these programmers are not feasible for applications using high indensity flash and small scale volume production. such as those devices used in Satitliete applications and the new game systems.    Why USB Willem (MCUmall GQ-2X/GQ-3X) extends the application and so fast? The true-USB willem MCUmall GQ-2X/3X programmer uses USB port for both data communication port (USB interface) and power supply, so only one USB cable is needed and the DB25 LPT data cable is no longer needed. As a result, this true-USB programmer design feature facilitates the portable applications and makes the programmer ideal for use with newer laptops which do not have a Parallel Port.  The true-USB willem MCUmall GQ-2X/3X programmer connects PC via high-speed USB link and own on-coard mcu,  this provides the fastest possible data transfer rates for programming/reading data from target IC's. The programmer is capable of being up to 20 times faster than newest  Parelle /LPT/Printer port Willem programmer on reading & verification (PCB4.5x,PCB5.xx,AC DC USB power willem, enhanced willem ...)  USB willem vesus Parrallel/LPT willems All existing willem programmers (except MCUmall GQ-2X, GQ-3X) in the market are classified as parrellel Willem programmers (another name:LPT willem). They use  a DB25pin data cable/printer cable for data transmission to PC printer port/laptop printer port, and some versions use USB port for power supply only. The LPT Willems/Parrellel willem version includes: PCB5.xx, PCB 4.5x, PCB3B, Willem programmer Pro, dual powered willem,enhanced willem, AC DC USB power willem, enhanced dual power and etc . Comparing to LPT Willems/Parrellel Willems , the USB Willem version: Extend the applications that LPT willem programmers are not able to be used  -Use with new laptop that has only USB port -On-spot, field applications, like on-spot chip tuning, portable -The applications use high density flashs, like satellite application  -Convenient and small scale production.  Significantly improve the performance of LPT willem towards professional level -  Most stable - Most portable - Ultra high speed (up to 20x faster than all existing LPT Willems) - Best software quality - Supports more chips - Support chips that LPT Willem are not capable of supporting  - Protect the chip from damage     Elevate Willem-brand image from cheap hobby level towards cost-for-performance professional tool - Keep Willem-brand abreast of the PC/laptop technology evolution - Design the software by professional software developer from CA  - Life-time free software upgrade - Device algoriithm update regularily - Support TSOP48, PSOP44, 16 bit chips that TOP,EasyPro 40pin are not capable of supporting - Competative & much better software performance than brand, like TOP - Establish post-sale support community (MCUmall Techical Forum)   Improve software design quality   - Easy to use - User-friendly interface - Multi-tasking:  user is able to do other job when the USB Willem programmer running the LPT Willems  100% occupy CPU while reading & writing    - Allow user add new devices to the device support list     Compatible Adapters/Accessories for MCUmall GQ-3X A full range of adapters is available/compatible, for more details, please visit our eBay store  16bit 40pin AT PLCC44 AT89+/MCS-51+ PLCC32 2in1 PIC+ TSOP32 TSOP48 PSOP44 TSOP adapter set UV Eraser SOIC8 SOP8 FWH+/LPC+ PLCc32-DIP28 PLCC32-DIP32