Original Vocom 88890300 diagnostic adapter vs replica
The review shows results after comparing characteristics of an original Vocom 88890300 diagnostic adapter with a Chinese replica. After reading this small comparative study, you will understand why Chinese replicas are cheaper than original equipment.
Original
Replica
Loose band.
1. Package
Let us have a look at the package.
Original
Replica
The chinese package is twice as large as the original one.
Replica
The label only inludes a barcode. No device information can be found.
Original
The label contains the following device information: serial number, name, certificates, etc.
Replica
The box is much larger that its contents, empty space is not filled. This means high risk of damage during transportation.
Apart from the device, the box includes cables and a CD.
Original
The box corresponds to device's size.
No adapters or cables because accessories and software are supplied separately.
Replica
CD with software.
Replica
The device is packed in a ziplock package.
Original
The device is packed in an antistatic sealed bag.
The bag contains a label with a serial number.
Replica
The cables are also packed in a ziplock package.
Original
The cables are packed in sealed bags.
Each bag contains contents information.
2. Devices appearance
First of all, it should be noted that a strong chemical odour could be felt after opening package.
Original
The housing rubber components have slight odour.
Replica
The housing rubber components emit strong chemical odour.
Original
The band includes a touch fastener with the possibility of length adjusting.
Replica
Loose band.
Original
The connector is closed with a rubber cap to protect from dust and moist.
Replica
The housing is not protected from dust or moist.
Replica
The rubber element is defected.
Original
Panels were anodized after punching. Rubber gaskets providing waterproofness of the housing are located between the wall and housing, as well as between the connector and wall.
Replica
Sidewalls are made of galvanized iron meaning possible rust.
As compared to the original device, smaller screws are used to hold the wall. During disassembling it was found that some of them were overtwisted meaning less screws holding the panel and respectively not reliable construction.
Original
Wi-Fi antenna is available.
Replica
No Wi-Fi antenna.
Original
Replica
Third-party connector.
3. Housing
The first thing that catches your eye when disassembling the device is that the Chinese replica has less wires coming from the connector pins as compared to the original device. Thus, the adapter should have limited functionality as compared to the original one.
Original
Original
Separate wires form a twisted pair.
The original connector pins are isolated to minimize the risk of contact closure.
Grounding bus is available.
Replica
Replica
One should pay attention to the fact that the wires are not twisted pair as compared to the original device. This may resilt in USB failures.
The connector itself is different from the original one. Pins are not isolated. This may result in contact closure during operation.
No grounding.
Original
The circuit board is located in a rubber box to protect it from mechanical damage, dust and moisture.
Replica
The device circuit board is not protected.
Replica
Scratches inside the housing mean additional treatment with sandpaper. Indicator holes might have been made with a blunt drill which left noticeable burrs. This is one example of the defects that were eliminated manually.
Circuit boards in such housings should be inserted in slots. The circuit board size does not correspond with housing size, so the producer put some glue to hold it. Fixing circuit board in such a way is not reliable. The circuit board will loose overtime, resulting in movement of LEDs, and wrong indication.
4. Circuit board
The Chinese device revealed serious drawbacks during disassembly that greatly affect its operation. First of all, the replica adapter includes only one circuit board, whereas the original includes two circuit boards. A connector lacking wires was discribed above. Reason for this was found after examining the circuit board - it lacks components.
Original
Original
Battery, Wi-Fi module, memory stick slot, tunning fork.
Replica
Replica
Actually, it lacks a lot of components.
Information on microcircuit chips is rubbed out. This is probably to prevent copying of the device by other Chinese producers.
There is large volume of glue on the circuit board.
Original
European QC marking.
Replica
QC marking of the Chinese producer.
Original
LEDs use lenses to direct the light. The rubber box includes separate tunnels for each LED to enable good LED indication.
Replica
The circuit board uses LEDs with greater scattering area. Considering the distance to the housing, it becomes clear why the indication is poor as compared to the original device.
Original
Replica
Connector type is different as compated to the original. Such connector is less reliable.
Original
Replica
Circuit board inductors are of smaller size which may indicate less rating.
Resistors, transformer are different from those on the original circuit board. Obviously, third party component were used, that are cheaper and respectively poor quality (high rate of defects).
Solder can be found at certain places indicating manual soldering. This is usually the case with high rate of defect components.
Flux traces can be seen on the circuit board which may result in corrosion.
Aluminum chips from the housing can be found on the circuit board.
5. Conclusion
The examination of the two devices with identical appearance revealed that it is only appearance that may make you think they are the same. The Chinese producer significantly simplified the microcircuit chip by eliminating many functions. Besides, the producer save on material quality. Assembly quality also leaves much to be desired.
Based on the examination above, one may conclude that there is quite a different device within the housing of the Chinese replica, the device that greatly underperforms in terms of functionality and reliability.
Original
Replica
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