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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Powered USB Hub 3.0, Sipolar 10-Port USB Hub with 12V 10A Power Adapter, Multi USB Port Expander Fast Data Transfer USB Data Hub Splitter for Laptop, PC,Mobile, Mobile HDD, Flash Drives

Powered USB Hub 3.0, Sipolar 10-Port USB Hub with 12V 10A Power Adapter, Multi USB Port Expander Fast Data Transfer USB Data Hub Splitter for Laptop, PC,Mobile, Mobile HDD, Flash Drives

Product ID: 162500382

Details

Brand
sipolar
Color
10 port usb3.0
Compatible Devices
Card Readers
Hardware Interface
USB
Special Feature
Powered

⚡5Gbps ultra-fast data transfer

🔌10 USB 3.0 ports

❄️Built-in cooling fan

S$157

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Description

🔗 Connect More, Wait Less, Work Smarter!

POWER UP EVERY PORT - Robust 12V 10A power adapter delivers stable 5V/2.1A charging to each port for simultaneous device support.
EXPAND YOUR WORKSPACE - 10 high-speed USB 3.0 ports to connect all your essential devices seamlessly.
PLUG PLAY DOMINATE - Universal compatibility with Windows, Mac, Linux—no drivers needed for instant productivity.
LIGHTNING FAST TRANSFERS - Experience data transfer speeds up to 5Gbps—10x faster than USB 2.0, so your HD movies sync in seconds.
STAY COOL UNDER PRESSURE - Integrated cooling fan and overload protection keep your devices safe during heavy multitasking.

The Sipolar Powered USB Hub 3.0 is a premium 10-port USB expander featuring ultra-fast 5Gbps data transfer, a powerful 12V 10A adapter for stable charging, and built-in cooling for safe, reliable multi-device connectivity. Compatible across major OS platforms, it’s designed for professionals who demand speed, safety, and seamless plug-and-play performance.

Specifications

ASIN	B07Y9DJ84Q
Additional Features	Powered
Best Sellers Rank	#957 in USB Hubs
Brand	sipolar
Color	10 port usb3.0 120W
Compatible Devices	Card Readers, Desktops, Laptops, Printers
Customer Reviews	4.4 4.4 out of 5 stars (33)
Data Transfer Rate	5 gigabits_per_second
Enclosure Material	Metal
Hardware Interface	USB
Manufacturer	Shenzhen Lpsen Technology Co., Ltd.
Mfr Part Number	DH112257
Model Number	A-423
Number of Ports	10
Operating System	Linux, Windows 10, Windows 8, Windows Vista
Total Usb Ports	10

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S$157

Duties & taxes included

In stock

Sold byAmazon SINGAPOREDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to SINGAPORE.

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