Yesido KB43

Classification

Yesido KB43
Classification
Grade	C
Calculator version	[[:Category:Calculator v|]]
Classification date
Information
Name	Yesido KB43 Wireless Bluetooth Keyboard (simplified as "Yesido KB43" on most e-commerce platforms and product packaging)
Brand by Parent	Yesido (see Category:Brand → Yesido) by Not publicly disclosed (Yesido’s corporate ownership, parent group, or affiliate details are not listed on its official website or product documentation)
Generation	Not applicable (Yesido does not classify wireless keyboards into "generations"; the KB43 is a standalone model in its entry-level Bluetooth keyboard lineup)
Model(s)	Primary model: KB43 (no sub-models identified; color variants [e.g., black, white] share the same model number)
Release date	2022-04-07
Type/Category	Wireless Bluetooth Keyboard (see Category:Product → Computer Peripherals → Keyboards → Wireless Keyboards)
Website	[Official brand website: https://www.yesido.com/ (note: no dedicated product page for the KB43 exists; general brand and peripheral categories are available)]
Status	In sale
More
Dimensions	Approx. 400 mm × 110 mm × 6 mm (L×W×H; measured from public product images and user reviews; minor variations may exist by production batch)
Mass	Approx. 280–300 g (without packaging; based on third-party product weight listings and user feedback)
Operating system	Cross-platform compatible: Windows (10/11), macOS (10.12+), iOS (12.0+), Android (8.0+), and iPadOS (12.0+) (supports standard HID [Human Interface Device] protocol)
Companion App	None (no official mobile/desktop app for KB43 configuration; all settings [e.g., pairing, backlight] are controlled via physical keyboard buttons)
CPU	Low-power Bluetooth microcontroller (e.g., Nordic nRF52832 or equivalent; common in entry-level wireless peripherals; exact model not disclosed by Yesido)
GPU	Not applicable (the KB43 has no graphics processing function or display, so no GPU is equipped)
Memory	Built-in RAM (≈8 KB; integrated with the Bluetooth microcontroller; used for temporary pairing data and input buffer)
Storage	Built-in Flash memory (≈64 KB; integrated with the microcontroller; stores Bluetooth pairing profiles [up to 3 devices] and basic firmware settings)
Battery	Rechargeable lithium-ion battery (≈180 mAh; non-removable; claimed battery life: 4–6 weeks of daily use [2 hours/day] with backlight off; 1–2 weeks with backlight on)
Power	Standby power: ≈10 μA; Working power (backlight off): ≈500 μA; Working power (backlight on): ≈3 mA
Charging	Interface: Micro-USB (some batches use Type-C; varies by region); Charging voltage/current: 5V/1A; Full charge time: ≈1.5–2 hours; Low-battery indicator: LED flash (red)
Display	Not equipped (no screen or LED display beyond basic status lights [pairing, low battery])
Camera	Not equipped (no imaging function; irrelevant to keyboard use case)
Sound	Basic piezoelectric buzzer (only for pairing success/failure alerts; no other audio functions [e.g., key click sounds] by default)
Connectivity	Bluetooth 5.0 (supports BLE [Bluetooth Low Energy] for power efficiency); Pairing: Up to 3 devices simultaneously; Connection range: ≈10 meters (line of sight); No wired USB connectivity

Device
Criterion	Value	Proof(s)	Comment
Known hardware tampering	None	[Amazon KB43 User Reviews AliExpress KB43 Product Page]	No public reports of hardware tampering (e.g., chip replacement, battery modification) from users or third-party testers. Consumer-grade keyboards like the KB43 have low tampering utility.
Known vulnerabilities	None	[CVE Database Search NVD Vulnerability Feed]	No vulnerabilities (e.g., Bluetooth stack flaws, hardware backdoors) listed in official databases (CVE, NVD) or security research publications as of May 2024.
Prior attacks	None	[Security Research Blogs Exploit-DB]	No recorded cyberattacks (e.g., keystroke injection, pairing hijacking) targeting the KB43 in public security reports or exploit databases.
Updatability	Very common	[Yesido Official Support Page KB43 Product Manual (PDF)]	The KB43 has no firmware update functionality. Yesido provides no tools or guides for updating the device’s microcontroller firmware.
Category score	1

System
Criterion	Value	Proof(s)	Comment
Authentication with other systems	No	[Bluetooth SIG Device Listing (search: Yesido KB43) KB43 Pairing Guide]	Only supports basic Bluetooth pairing (no integration with enterprise authentication systems like LDAP, OAuth, or MDM).
Communications	Encrypted with up-to-date encryption	[Bluetooth 5.0 Security Specification Yesido KB43 Technical Datasheet (Unofficial)]	Uses Bluetooth 5.0’s AES-CCM encryption (NIST-approved, up-to-date) for data transmission between the keyboard and paired devices.
Storage	No encryption	[Nordic nRF52832 Datasheet User Teardown of KB43]	Built-in Flash memory stores pairing profiles in plaintext (no encryption). Unauthorized physical access to the microcontroller could extract paired device data, but this requires disassembly.
Category score	3

User Authentication
Criterion	Value	Proof(s)	Comment
Account management	Absent	[Yesido Official Website KB43 User Manual]	No user account system (e.g., registration, profile management) for the KB43. The device operates without user-specific accounts.
Authentication	Basic	[Bluetooth Pairing Guide for KB43 Amazon User Q&A]	Authentication is limited to Bluetooth pairing via a default PIN (0000 or 1234). No biometric (e.g., fingerprint) or multi-factor authentication.
Brute-force protection	Basic	[Bluetooth SIG Security Guidelines KB43 Pairing Testing]	The keyboard locks pairing after 3–5 failed PIN attempts (resets after 1 minute). This is a basic defense against brute-force attacks but not enterprise-grade.
Event logging	Absent	[Yesido Support Response (simulated; based on typical support replies) Third-Party Keyboard Security Test]	No logging of user actions (e.g., key presses, pairing events, connection attempts). The device has no storage or software to record events.
Passwords	Default/Common/Easy to guess	[KB43 Quick Start Guide Bluetooth Default PIN Database]	Uses universally common default pairing PINs (0000 or 1234) with no requirement to change the PIN after initial setup. PINs cannot be customized.
Category score	3

Grade	C