United Kingdom buying research · Computers

The Portable SSD You Buy for Speed Must Still Fit Your Workflow

Two 1 TB drives look similarly portable. The real choice is whether your computer can use the faster one's 20 Gbps connection.

Published 2026-09-24Updated 2026-09-24Confidence High7 evidence records

We compare products every day and update our recommendations when a better option is verified.

30-second verdict

Choose the Acer PA100 for light, simple file carry across USB-C and USB-A devices. It weighs under 27 g, includes a C-to-C/A cable and has a maker-rated 560 MB/s read ceiling. Choose the Crucial X10 when you transfer large files often and have a 20 Gbps USB-C host; its listing advertises up to 2,100 MB/s read, but ordinary 5 or 10 Gbps ports will reduce that advantage. X10 adds an IP65 enclosure and 3 m drop claim, while Acer gives no IP rating. Neither drive replaces a second backup. The checked new UK offers were in stock with active purchase buttons and London delivery; Acer was dispatched by Amazon and sold by BIWIN Tech, and Crucial was sold and shipped by Amazon.

The two strongest options

Shortlisted after comparing market fit, product details, owner feedback, and recurring buying risks.

Light backup for mixed USB portsPick 1 · Acer

PA100 Portable SSD 1 TB

1 TB · ASIN B0H75KVPT8

£132.99 new checked 24 Sep 2026

Under 27 g and only 9 mm thick, PA100 has an included USB-C-to-C/A cable for older and newer computers. The Acer Storage specification rates it up to 560 MB/s read and 430 MB/s write over USB 3.2 Gen 1. Amazon's higher 522 MB/s write wording is inconsistent, so do not plan around it. The maker lists up-to-1 m drop resistance and a three-year limited warranty, with no published IP rating. BIWIN Tech sold the checked offer and Amazon dispatched it; BIWIN is the licensed Acer storage maker.

Connection / rated readUSB 3.2 Gen 1 · up to 560 MB/s

Size / warrantyUnder 27 g · 3-year limited

Seller / dispatchBIWIN Tech / Amazon

Owner-feedback snapshotThe exact listing showed 4.7/5 from 42 ratings and 200+ bought in the past month. Matching 1 TB UK review feedback mentions easy connection and small size; the aggregate rating can span capacities.

View product details Check current price

Large transfers on a 20 Gbps USB-C hostPick 2 · Crucial

X10 Portable SSD 1 TB

Blue · CT1000X10SSD9-02 · ASIN B0F3377JBN

£169.99 new checked 24 Sep 2026

The X10 listing advertises up to 2,100 MB/s read, and its manufacturer comparison panel identifies USB 3.2 Gen 2x2 at 20 Gbps. Its own comparison panel gives a slightly lower 2,000 MB/s read figure, so the promise is a class of rated speed, not a guaranteed file-copy result. It lists IP65 dust/water resistance, a 3 m drop claim, a USB-C cable and a three-year limited warranty. Amazon sold and shipped the checked offer. Review feedback for the 1 TB Blue option mentions plug-and-play use and small size.

Connection / rated readUSB 3.2 Gen 2x2 · up to 2,100 MB/s advertised

Protection / warrantyIP65, 3 m drop claim · 3-year limited

Seller / shipperAmazon / Amazon

Owner-feedback snapshotThe exact listing showed 4.3/5 from 2,536 global ratings. Matching 1 TB Blue UK review feedback mentions easy setup and small size. Other capacities can contribute to the aggregate rating, and a recent-purchase label was not visible.

View product details Check current price

What we researched

These are different makers and verified new 1 TB UK offers, not colour or capacity variants of one drive. Acer's listing showed 200+ recent purchases and 42 ratings; Crucial showed 2,536 global ratings but no visible recent-purchase label. Those are signals about the selected listings, not market share or a national rank. The choice turns on the computer port: Acer's 5 Gbps-class interface suits everyday backup; Crucial's higher advertised read ceiling calls for a 20 Gbps USB-C host. Amazon's X10 page itself gives 2,100 MB/s in the title and 2,000 MB/s in its manufacturer comparison, so treat either as an upper bound. Acer's listing write-speed claim also differs from the brand-licensed PA100 specification, for which this guide uses 430 MB/s.

Key findings

Buy the port you actually have

The X10's 20 Gbps interface gives headroom only when the computer supports Gen 2x2. A standard USB-C-shaped port alone does not establish that capability.

High

Read the speed labels conservatively

Acer's Amazon wording and brand-licensed write rating differ, while two places on the X10 listing give different read ceilings. Use 430 MB/s for Acer's maker-rated write ceiling and treat X10's 2,000–2,100 MB/s as advertising rather than a tested copy speed.

High

Protection is not backup

IP65 and drop claims describe the X10 enclosure under specified conditions. Neither drive protects against every loss, so retain an independent copy of important files.

High

Buying criteria side by side

Comparison	Acer	Crucial
Host connection	USB 3.2 Gen 1 / 5 Gbps	USB 3.2 Gen 2x2 / 20 Gbps for top rating
Speed claim	Up to 560 MB/s read; maker says 430 MB/s write	Up to 2,100 MB/s read in listing; panel says 2,000
Carry and cable	Under 27 g; C-to-C/A cable included	Compact; USB-C cable, no listed USB-A adapter
Protection	Up-to-1 m drop claim; no cited IP rating	IP65 and up-to-3 m drop claim
Warranty and data	Three-year limited or TBW; keep another backup	Three-year limited; keep another backup
Checked UK offer	£132.99; BIWIN Tech seller, Amazon dispatch	£169.99; Amazon seller and shipper

Pre-purchase checklist

Confirm PA100 1 TB ASIN B0H75KVPT8 or X10 1 TB Blue ASIN B0F3377JBN before ordering.
Check the computer's USB port specification before paying for the X10 speed ceiling.
Choose the included cable or an appropriately rated USB-C cable; Acer also supports the included USB-A option.
Keep a separate copy of important files and check warranty conditions.
Recheck new condition, seller, delivery, final price and stock on the exact listing.

Sources

Open the original material directly.

Candidate search

Amazon UK · 1 TB portable SSD candidate searchBest Sellers-sorted search was used to screen several portable SSD candidates and remove mechanical and internal drives. Its order is not a UK sales ranking.

Local listing

Amazon UK · Acer PA100 1 TB exact listingExact ASIN B0H75KVPT8, selected 1 TB PA100, £132.99 new, in stock, Add to basket and Buy Now, dispatched by Amazon and sold by BIWIN Tech with delivery to London SW1A 1AA. The listing showed 200+ bought in the past month and 4.7/5 from 42 ratings. Its claimed 522 MB/s write speed differs from Acer Storage's 430 MB/s ceiling; the report uses the maker's conservative figure.

Local listing

Amazon UK · Crucial X10 1 TB exact listingExact ASIN B0F3377JBN, selected X10 1 TB Blue, model CT1000X10SSD9-02, £169.99 new, in stock, Add to basket and Buy Now, sold and shipped by Amazon with delivery to London SW1A 1AA. The page showed 4.3/5 from 2,536 global ratings; no recent-purchase label was visible. Its product title says up to 2,100 MB/s read, while its manufacturer comparison panel says 2,000 MB/s; both are rated ceilings rather than a measured result.

Brand-licensed product specifications

Acer Storage · PA100 specifications1 TB PA100, USB 3.2 Gen 1, up to 560 MB/s read and 430 MB/s write, 86 × 40 × 9 mm, under 27 g, C-to-C/A cable, up-to-1 m drop claim and three-year limited warranty or TBW. No IP water/dust rating is published.

Brand licensing

Acer Storage · BIWIN relationshipBIWIN Storage states it designs and makes Acer-branded storage under licence; this explains the BIWIN Tech seller identity without proving terms of this individual offer.

Matching-option owner review

Amazon UK · Acer 1 TB owner feedbackFive-star verified UK purchase review dated 16 September 2026, labelled 1 TB, mentions easy connection, small size and responsive operation. This is review content, not an independent speed test.

Matching-option owner review

Amazon UK · Crucial X10 1 TB owner feedbackFive-star verified UK purchase review dated 17 June 2026, labelled X10, 1 TB and Blue, mentions small size, plug-and-play use and gaming use. The listing's aggregate ratings can include other capacities.

Method
On 24 September 2026 we screened Best Sellers-sorted Amazon.co.uk 1 TB portable SSD results, then opened the two exact detail pages and checked the selected capacity, ASIN, new stock, seller, dispatch, London SW1A 1AA delivery and active purchase controls. We compared Acer Storage's licensed PA100 specifications and BIWIN relationship with Amazon's X10 product and manufacturer-panel information. We read one five-star verified UK review for each selected 1 TB option. We did not benchmark either drive. The PA100 write-speed conflict and X10 read-speed discrepancy are disclosed. Purchase and rating labels refer to these listings and are not UK market rankings. Product selection was independent of affiliate availability. As an Amazon Associate, buypick may earn from qualifying purchases.

The two strongest options

PA100 Portable SSD 1 TB

X10 Portable SSD 1 TB

What we researched

Key findings

Buy the port you actually have

Read the speed labels conservatively

Protection is not backup

Buying criteria side by side

Pre-purchase checklist

Sources

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