Does the ac adapter work in japan (100v)?

AC adapter works with 100v, grounded outlet.

Can you connect another usb hub to the usb ports?

Your question probably could be simply answered yes. But the real answer is why and what will happen. You plug this into a single 3.0/1 USB port to connect to the computer. It can only pass so much data and it cannot double that data or anything else. So attaching another Sipolar hub might work, but you will not get the result you expect. Better to plug it into ANOTHER 3.0/1 USB on the computer. Daisy chaining them really is not a great idea at all. Not even for charging lots of mobile phones are other computer batteries. But on their own USB ports on the computer will give you what you want, I think. Somewhere in my foggy memory I think most computers can support 20 usb ports without a problem. However, once again, remember that each port on its own only supports so much. If you are trying to put a bunch of ASIC USB miners together, it might just work on a daisy chain. But you also have to remember power. The unit is 12v 10 amp, and if you are pushing those miners you will have to give them more power. I think they want 2.5amp so you need to get a more powerful power supply to jam 10 in each one. Hope that helped.

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FLYEER USB hubs

Product ID: 511561299

Details

Brand
sipolar
Colour
Red
Compatible devices
Desktops Mouse
Hardware interface
USB
Special feature
Fast Charging

⚡5 Gbps data transfer

🔌10 USB 3.0 ports

🛡️Multi-layer safety protection

2571 kr

Duties & taxes included

In stock

Sold byAmazon NorwayDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🔗 Power up your productivity—10 ports, zero compromises!

EXPAND YOUR WORKSPACE - Connect up to 10 devices simultaneously without missing a beat.
BLAZING FAST TRANSFERS - Experience USB 3.0 speeds up to 5 Gbps for seamless syncing and charging.
PLUG PLAY SIMPLICITY - No drivers needed—just plug in and power up instantly with included cable and adapter.
UNIVERSAL COMPATIBILITY - Works flawlessly across Windows, Mac, Linux, and all your favorite gadgets.
BUILT TO PROTECT PERFORM - Aluminum alloy body with over-current, over-voltage, and temperature safeguards keeps your devices safe.

The FLYEER USB Hub A-423 is a premium 10-port USB 3.0 hub designed for professionals who demand speed and reliability. With transfer rates up to 5 Gbps, broad OS compatibility, and robust safety features including over-current and over-temperature protection, it effortlessly powers and syncs multiple devices simultaneously. Its sleek aluminum build and plug-and-play setup make it the ultimate desk upgrade for multitasking millennials craving efficiency and style.

Specifications

ASIN	B07Y9DJ84Q
Best Sellers Rank	417,688 in Computers & Accessories ( See Top 100 in Computers & Accessories ) 4,961 in USB Hubs
Brand Name	sipolar
Colour	Red
Compatible Devices	Desktops, Keyboards, Laptops, Mouse, Smartphones, Tablets
Customer Reviews	4.4 4.4 out of 5 stars (33)
Data Transfer Rate	5 Gigabits Per Second
Enclosure Material	Aluminum
Hardware Interface	USB
Manufacturer	FLYEER
Manufacturer Part Number	DH112257
Model Number	A-423
Number of Ports	10
Operating System	Linux,Mac Os,Vista,Windows Xp
Product Features	Fast Charging, Fast Data Transfer, Powered
Total USB Ports	10

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