Question 1

has anyone tried to connect them to each other to extend the length?

Accepted Answer

I think so, and it didn't work.  Its junk from China, don't buy it.  I went to Bestbuy to get something else not long after and on a whim checked to see if they had something like this (I needed 12 feet or so) and...right there in a back aisle for about 20 or 25 bucks was the 1 piece I needed work perfectly from Bestbuy.  I bought two of these cheap on amazon...and got a piece of junk from China that the computer could "not recognize" no matter how many ways I tried it.  Go to bestbuy instead and buy a reputable brand...worked for me.

Question 2

your usb extension wire has a red, yellow, green and black wire inside which one is positive and which one is negative

Accepted Answer

USB wires are generally universal with the following color reference: 
The red wire is a positive power wire with 5 volts of DC power.
The black wire is the ground wire (similar to most all electronic devices).
The white wire is a "positive" data wire.
The green wire is a "negative" data wire.
Since the wire you have has a yellow instead of white, I would expect it to be the positive.

Question 3

does it come with the plug in part,  to plug the cord to the wall?  thanks

Accepted Answer

No it's like an extension cord for electricity but for usb.

Question 4

Does this item provide data transfer and if so what speed?

Accepted Answer

It's a simple cord I simple USB cord and I transferred data I have no idea what speed it went except to go at the speed of my specific digital items such as my phone speed or my computer speed. It is a relatively inexpensive cord so if you're looking for something high tech I wouldn't get this one necessarily but I think it could work for average everyday use.

ASIN	B01KM05UNO
Best Sellers Rank	#33,181 in Computers ( See Top 100 in Computers ) #2,335 in USB Cables
Brand	Costyle
Brand Name	Costyle
Color	White
Compatible Devices	PC, Printer, Smartphone, Tablet
Compatible Phone Models	Htc One
Compatible devices	PC, Printer, Smartphone, Tablet
Compatible phone models	Htc One
Connector Gender	Male-to-Female
Connector Type	USB
Connector type	USB
Customer Package Type	standard packaging
Customer Reviews	4.7 out of 5 stars 2,476 Reviews
Data Transfer Rate	0.48 Gigabits Per Second
Frequency	480 MHz
Indoor Outdoor Usage	Outdoor
Item Shape	Round
Item Weight	0.64 Grams
Manufacturer	Costyle
Maximum Voltage	5 Volts (DC)
Model	8541682764
Model Name	8541682764
Number of Items	2
Number of Pins	4
Other Special Features of the Product	durable
Outer Material	Polyvinyl Chloride (PVC)
Part Number	LYSB01KM05UNO-CMPTRACCS
Recommended Uses For Product	Data Transfer
Recommended uses for product	Data Transfer
Special features	durable
UPC	600978568290
Unit Count	12 Feet

Costyle Costyle 2-Pack USB 2.0 6.6ft/2m USB Type A Male to A Female Extension Cord USB Cable Extender with Gold-Plated Connectors (White)

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